<p><strong>Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals that have been widely used since the 1940s in industries and consumer goods. They are found in products like water-repellent clothing, stain-resistant fabrics, cosmetics, firefighting foams, and grease-, water-, and oil-resistant items. For instance, PFAS are commonly present in non-stick cookware used in everyday life. Their persistence and long biological half-lives have resulted in measurable levels in nearly all people in developed countries, with associated PFAS human health effects reported worldwide.</strong></p><p>Evaluating PFAS health risks requires understanding their adverse health effects at real-world exposures, particularly during sensitive life stages, along with their modes of action, toxicokinetics, and dose-response relationships. This knowledge supports risk estimates that guide public health limits, exposure reduction, and environmental cleanup efforts.</p><h3><strong>Why are PFAS a Health Concern?</strong></h3><p>PFAS have a chemical structure with a perfluorinated carbon tail that repels both water and oil and an anionic head group that attracts water, making them highly resistant and persistent. As a result, they do not break down and instead accumulate in the bodies of people and animals worldwide through food and repeated exposures. They even bio-magnify through the food web. Growing evidence has raised concerns about the harmful effects of PFAS on human health.</p><p>In the human body, PFAS bind strongly to proteins due to their polar, hydrophobic nature and have been detected in serum, cord blood, and breast milk. Unlike many other bio-accumulative contaminants, they do not tend to accumulate in fat tissue.</p><h3><strong>PFAS Testing Techniques</strong></h3><p>PFAS have a chemical structure with a perfluorinated carbon tail that repels both water and oil and an anionic head group that attracts water, making them highly resistant and persistent. As a result, they do not break down and instead accumulate in the bodies of people and animals worldwide through food and repeated exposures. They even bio-magnify through the food web. Growing evidence has raised concerns about the harmful effects of PFAS on human health.</p><p>In the human body, PFAS bind strongly to proteins due to their polar, hydrophobic nature and have been detected in serum, cord blood, and breast milk. Unlike many other bio-accumulative contaminants, they do not tend to accumulate in fat tissue.</p><p>While animal studies show that most PFAS are primarily excreted through urine, renal clearance in humans is much slower, raising significant concerns for PFAS human health. The slow elimination contributes to the long-term effects of PFAS on humans.</p><p>PFAS have extended half-lives, with perfluorooctanoic acid (PFOA) persisting for approximately 3.5 years and perfluorooctane sulfonic acid (PFOS) for roughly 4.8 years. Some studies also report a range of 2.3 to 3.3 years. These findings highlight serious PFAS health risks, demanding the need for continued monitoring and risk assessment.</p><h3><strong>Known and Suspected Health Effects of PFAs in Humans</strong></h3><h4><strong>Immunological effects</strong></h4><p>Epidemiological studies have shown that PFAS exposure is linked to weakened immune responses, including reduced antibody levels after vaccinations such as diphtheria, tetanus, rubella, and mumps, with these effects persisting into adolescence and adulthood.</p><p>Prenatal and early-life exposure to PFAS has been linked to higher risks of infections such as airway, throat, and gastrointestinal illnesses, as well as conditions like atopic dermatitis. Overall, the evidence on PFAS and human health suggests that exposure to PFAS during infancy and childhood can suppress the immune system, though some effects may differ by sex.</p><h4><strong>Liver disease and cancer</strong></h4><p>The liver is a major site for long-chain PFAS accumulation, with experimental studies showing toxic effects such as fat infiltration in liver cells, apoptosis, disrupted fatty acid metabolism, and even tumor development. Animal toxicology and histology studies indicate that PFAS can alter liver metabolism, causing increased bile acid reuptake and lipid buildup. These findings demonstrate the effects of PFAS on liver function and long-term disease risk.</p><h4><strong>Kidney diseases</strong></h4><p>PFAS exposure has been consistently linked to higher uric acid levels, a biomarker of increased risk for kidney disease, in both adults and children. The prolonged half-lives of long-chain PFAS are largely due to strong kidney reabsorption. Human studies link legacy PFAS such as PFOA and PFOS exposure to reduced kidney function and chronic kidney disease. PFOA and PFOS health effects can also be seen in the body where these substances tend to accumulate in kidney tissues causing nephrotoxicity.</p><h4><strong>Reproductive outcomes</strong></h4><p>Exposure to PFOA has been linked to reduced sperm motility, lower sperm concentration and count, and hormonal changes in young men. PFAS can also cross the placenta and accumulate in breast milk, allowing transfer from mother to child. As a result, young children often have higher serum PFAS levels than their mothers.</p><h3><strong>How do PFAS enter the Environment and Food Chain?</strong></h3><p>Human exposure to PFAS occurs through multiple pathways. These may vary from exposure to indoor air and dust to ingestion of contaminated water and food, particularly in areas near industrial sites. Thus, PFAS human health concerns may arise from:</p><ul><li><strong>Water:</strong> PFAS contaminate public and private drinking water sources, rivers, and groundwater near industrial areas, landfills, and waste sites. Firefighting foams (AFFFs) used at airports, military bases, and training facilities are a major contributor, raising concerns about PFAS chemicals health effects on the communities dependent on these resources.</li><li><strong>Soil and Air: </strong>They spread through soil and air around hazardous waste sites, manufacturing facilities such as chrome plating, electronics, textiles, paper, and through biosolids used as fertilizers.</li><li><strong>Food:</strong> PFAS enter the food chain through contaminated fish, seafood, dairy, meat, crops, and animal products. Food packaging such as grease-resistant paper, fast-food wrappers, and microwave popcorn bags also contribute PFAS to the environment.</li><li><strong>Household and Consumer Products:</strong> Everyday items like stain- and water-resistant fabrics, non-stick cookware, cleaning agents, paints, sealants, and certain personal care products (shampoo, dental floss, cosmetics) release PFAS into homes.</li><li><strong>Exposure Pathways: </strong>This is an area of growing research, it is currently understood that people are being exposed to PFAS through various means, including drinking contaminated water, eating contaminated food, inhaling polluted air or dust, swallowing soil, using PFAS-containing products, or working in high-risk occupations such as firefighting and chemical manufacturing.</li></ul><h3><strong>Importance of Accurate PFAS Testing</strong></h3><p>Accurate<a target="_blank" rel="noopener noreferrer" href="https://www.phenomenex.com/industries/pfas"><strong> PFAS testing solutions</strong></a> are essential to measure the presence of environmental chemicals and metabolites in human tissues and fluids. Testing can provide a clearer picture of total internal exposure from all sources and pathways. The wide diversity of PFAS, with varying chemical and physical properties, requires the development of tailored analytical procedures that depend on the sample type and medium.</p><p>The choice of biological sample depends on the specific PFAS of concern, with serum most often used to measure those with long half-lives, while urine or whole blood may be better for short-lived compounds. PFAS can also be detected in plasma, breast milk, and hair, each providing unique insights into exposure at different life stages. For example, hair can reflect historical exposures, and breast milk testing helps estimate infants intake, which is a significant concern for many communities that have been exposed to these substances.</p><p>Because PFAS detection limits are 1,000 times lower (ppt) than routine analyses (ppb), strict precautions such as verifying PFAS-free supplies are essential to prevent sample contamination, which can still occur from vendor or manufacturing changes. Extremely low detection limits and regulatory criteria is in the parts per trillion (ppt) range. Hence, field QC sample collection and analysis are crucial in investigating the effects of PFAS on humans.</p>

Health Risks Associated with PFAS Exposure

<div><div><p><strong>Scientists from UCT Prague contributed to a large-scale study showing that a small change in the so-called anticodon stem of transfer RNAs can expand their decoding capabilities – not only in eukaryotes but also in bacteria.</strong></p></div><div><p>Scientists from UCT Prague contributed to a large-scale study showing that even a small change in transfer RNA (tRNA) can fundamentally affect how a cell reads its genetic information. Computer simulations explained why certain tRNAs are able to ignore a signal that under normal circumstances marks the end of protein synthesis. Such tRNAs were previously known in higher organisms. The study, however, mapped how common these unusual tRNAs are in bacteria.</p><p>The genetic code is a&nbsp;set of rules by which cells translate genetic information during protein synthesis. Transfer RNAs (tRNAs) play a&nbsp;key role in this process, recognising short stretches of mRNA known as codons through their anticodon. In addition to amino acid codons, there is one start codon and several termination (stop) codons. Stop codons are not recognised by transfer RNAs but by specialised enzymes that terminate protein synthesis. Standard tRNAs have five nucleobase pairs in their so-called anticodon stem. Recently, however, it has emerged that some organisms carry functional tRNAs with only four pairs. These "shortened" variants can recognise even codons that, according to the classical rules, should not correspond to them.</p><p>An international team led by the <strong>Biology Centre of the Czech Academy of Sciences in České Budějovice</strong> analysed over <strong>42,000&nbsp;</strong>bacterial genomes and found that tRNAs with a&nbsp;four-pair stem occur in bacteria surprisingly often. In some cases, these variants likely enable the reading of the stop codon UGA as the amino acid tryptophan, a&nbsp;phenomenon previously associated mainly with unicellular eukaryotes.</p><p>The<strong> </strong><a target="_blank" rel="noopener noreferrer" href="https://kolar.vscht.cz/"><strong>Kolář group</strong></a><strong> </strong>at the <strong>Department of Physical Chemistry, UCT Prague</strong>, focused on the question of why a&nbsp;four-pair stem alters the decoding properties of tRNA. To address this, they employed atomistic molecular dynamics simulations, which make it possible to track the movement of every atom in a&nbsp;tRNA molecule over time.</p><p><strong>Jakub Žváček</strong>, a&nbsp;student on the Master's&nbsp;programme in Data Engineering in Chemistry, prepared a&nbsp;total of nine variants derived from the tryptophan tRNA of the bacterium Escherichia coli: the wild type with a&nbsp;five-pair stem, six mutants with a&nbsp;disrupted top base pair, and two previously described variants that promote reading of the stop codon UGA (the G24A&nbsp;and A9C&nbsp;mutations). The simulation results showed that disrupting the top base pair does not cause the overall three-dimensional structure of the tRNA to collapse. It remains stabilised by stacking interactions of neighbouring bases and non-canonical hydrogen bonds. The key finding, however, concerns a&nbsp;region at the interface of the D-arm and the stem – kind of hinge within the tRNA. In some mutants, the simulations revealed destabilisation of this region and increased flexibility of the anticodon stem, reminiscent of the behaviour of known mutations that promote stop codon readthrough. The simulations thus provided a&nbsp;structural explanation for the experimental observations and helped formulate predictions about which nucleotide combinations in the disrupted pair are functionally relevant.</p><p>The study proposed an extension of the so-called superwobble hypothesis to include non-canonical C:A&nbsp;pairing at the third codon position. If this hypothesis is confirmed for other types of tRNA as well, it will have profound implications for our understanding of how the genetic code — shared by all known organisms — has been shaped by evolution.</p><p>The results were published in the<strong> </strong><a target="_blank" rel="noopener noreferrer" href="https://academic.oup.com/nar/article/54/7/gkag327/8659125"><strong>Nucleic Acids Research</strong></a> (2026, 54, gkag327).</p></div><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/VSCHT_Praha_Pocitacove_simulace_osvetlily_jak_neobvykle_t_RNA_meni_pravidla_cteni_genetickeho_kodu_f6de6700a0.jpg" alt="VŠCHT Prague: Computer simulations shed light on how unusual tRNAs change the rules of reading the genetic code: Molecular architecture of the transfer RNA with the 5th anticodon-stem base pair labelled. This base pair affects the decoding ability of the tRNA anticodon." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_VSCHT_Praha_Pocitacove_simulace_osvetlily_jak_neobvykle_t_RNA_meni_pravidla_cteni_genetickeho_kodu_f6de6700a0.jpg 245w," sizes="100vw" width="759" height="268"></p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/VSCHT_Praha_Pocitacove_simulace_osvetlily_jak_neobvykle_t_RNA_meni_pravidla_cteni_genetickeho_kodu_2_c4296b9015.jpg" alt="VŠCHT Prague: Computer simulations shed light on how unusual tRNAs change the rules of reading the genetic code: Analysis of anticodon stem flexibility showed that the mutation of the 5th nucleobase pair (C27A), which enables stop-codon readthrough, loosens the anticodon stem in a manner similar to the previously known Hirsh mutation G24A. Conversely, the C27U mutation does not loosen the stem, which correlates with the absence of this mutation in the genomes of bacteria containing tRNAs with 4bp stems." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_VSCHT_Praha_Pocitacove_simulace_osvetlily_jak_neobvykle_t_RNA_meni_pravidla_cteni_genetickeho_kodu_2_c4296b9015.jpg 245w," sizes="100vw" width="759" height="196"></p><blockquote><h4><strong>Original article&nbsp;</strong></h4><h4><a target="_blank" rel="noopener noreferrer" href="https://academic.oup.com/nar/article/54/7/gkag327/8659125?login=false"><strong>Frequent occurrence and predicted functions of tRNAs with 4-base-pair anticodon stems in bacteria: extended superwobble hypothesis</strong></a></h4><p>Fadel Fakih, Satish Nandipati, Ambar Kachale, Jiří Heller, Jakub Žváček, Filip Brázdovič, Nawal Al-Chamy, Pragya Tripathi, Zdeněk Paris, Leoš Shivaya Valášek, Michal H Kolář, Vyacheslav Yurchenko, Marek Eliáš, Eugene V Koonin, Julius Lukeš, Anzhelika Butenko</p><p><i>Nucleic Acids Research</i>, Volume 54, Issue 7, 24 April 2026, gkag327</p><p><a target="_blank" rel="noopener noreferrer" href="https://doi.org/10.1093/nar/gkag327">https://doi.org/10.1093/nar/gkag327</a></p><h6>licenced by <a target="_blank" rel="noopener noreferrer" href="https://creativecommons.org/licenses/by/4.0/"><strong>CC-BY 4.0</strong></a></h6></blockquote><h4><strong>Abstract</strong></h4><p>Recently, a tRNA<sup>Trp</sup><sub>CCA</sub> with a 4-base-pair (bp) anticodon stem (AS) was shown to efficiently recognize a near-cognate UGA codon in unicellular eukaryotes, such as some trypanosomatids and ciliates, thereby representing a novel codon reassignment mechanism. To determine whether this mechanism also evolved in bacteria, we analysed a dataset of 42 109 genomes, including previously reported cases of stop-to-tryptophan UGA reassignment and a newly identified instance in the phylum Patescibacteriota. We show that the 4-bp AS tRNA<sup>Trp</sup> species are present across diverse bacteria and in some cases likely function in decoding in-frame UGA codons. Most notable is the endosymbiotic bacterium <i>Candidatus</i> Zinderia insecticola, which contains only the near-cognate 4-bp AS tRNA<sup>Trp</sup><sub>CCA</sub>, while lacking both canonical 5-bp AS tRNA<sup>Trp</sup><sub>CCA</sub> and a tRNA<sup>Trp</sup><sub>UCA</sub>. The secondary structure of this 4-bp AS tRNA<sup>Trp</sup> resembles that of its eukaryotic counterpart, suggesting convergent evolution. We experimentally confirmed the UGA readthrough capacity of 4-bp AS tRNA<sup>Trp</sup><sub>CCA</sub> in <i>Escherichia coli</i>, and applied molecular dynamics simulations to suggest the underlying mechanism. Furthermore, we tested several predictions based on accepting the previously excluded possibility of C:A base pairing at the 3rd codon position. These findings provide new insights into the structural diversity of transfer RNAs (tRNAs) and expand our understanding of genetic code evolution.</p></div>

Computer simulations shed light on how unusual tRNAs change the rules of reading the genetic code

<p><strong>Clarity 10.2 expands instrument control capabilities with new control modules and updates the MS extension to help you work more efficiently.</strong></p><h4><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/999"><strong>Clarity</strong></a><strong> 10.2 highlights</strong></h4><ul><li>New and updated control modules</li><li>Improved MS data import and export</li><li>Obsolete hardware support ended</li></ul><h4><strong>Instrument control modules</strong></h4><p>Clarity 10.2 introduces new instrument control modules from Annuo (AS-3117, FAS-3823) and updated instrument controls form Sykam and Ecom.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Data_Apex_Instrument_control_modules_5de26782b0.jpg" alt="DataApex: Instrument control modules" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Data_Apex_Instrument_control_modules_5de26782b0.jpg 228w," sizes="100vw" width="380" height="260"></p><h4><strong>MS data import/export improvements</strong></h4><p>Clarity improves MS data exchange, especially for *.cdf files. MS instruments now support export and import of multiple spectral data and non-spectral signal data in the same CDF file. Import also better handles uniform sampling information, m/z Step values, scale factors, and file names with non-ASCII characters. Exporting individual chromatogram signals from MS instruments is now available through a separate Export Chromatogram dialog.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Data_Apex_MS_data_import_export_improvements_a7967a4020.jpg" alt="DataApex: MS data import-export improvements" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Data_Apex_MS_data_import_export_improvements_a7967a4020.jpg 228w," sizes="100vw" width="378" height="259"></p><h4><strong>Obsolete hardware support terminated</strong></h4><p>Due to changes in Windows driver security requirements, this update discontinues support for obsolete hardware, including INT7, INT9, U-PAD, U-PAD2, and CB20.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Data_Apex_Obsolete_hardware_support_terminated_24d9329419.jpg" alt="DataApex: Obsolete hardware support terminated" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Data_Apex_Obsolete_hardware_support_terminated_24d9329419.jpg 228w," sizes="100vw" width="378" height="259"></p><blockquote><p><strong>Explore the complete list of all changes, fixes, and additions in version 10.2.</strong></p><p><strong>👉</strong><a target="_blank" rel="noopener noreferrer" href="https://www.dataapex.com/version_history?product=1"><strong>See the complete changelog&nbsp;</strong></a></p></blockquote>

Clarity Chromatography Software 10.2 released!

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Since 1991 DataApex develops and manufactures chromatography data stations. DataApex is constantly striving to provide users with efficient and up-to-date tools for chromatography data processing.

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The University of Chemistry and Technology, Prague is a natural centre of first-rate study and research in the area of chemistry in Czechia and is one of the country's largest educational and research institutions focused on technical chemistry, chemical and biochemical technologies, material and chemical engineering, food chemistry, and environmental studies.

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Bioanalytic Individual LC-MS/MS training

We are ready to prepare customized LC-MS/MS training for the needs of participants.

<h4><strong>BASIC INFORMATION</strong></h4><ul><li>TITLE: <strong>Customized LC-MS/MS Training</strong></li><li>CATEGORY: <strong>LC-MS/MS training</strong></li><li>LOCATION: <strong>Lodz, PL</strong> or other</li><li>TRAINING TIME: <strong>1-5 days</strong> or more</li><li>NUMBER OF PARTICIPANTS: <strong>4-8 people</strong></li><li>EQUIPMENT:<strong> SCIEX QTRAP/QTOF LC-MS/MS</strong></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Bioanalytic_Bioanalytic_Individual_LC_MS_MS_training_8a73408c56.jpg" alt="Bioanalytic: Bioanalytic Individual LC-MS-MS training." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Bioanalytic_Bioanalytic_Individual_LC_MS_MS_training_8a73408c56.jpg 245w," sizes="100vw" width="1536" height="930"></p><h4><strong>TRAINING DESCRIPTION</strong></h4><p>Customized LC-MS/MS training we are ready to prepare for the needs of participants, discussing:</p><ul><li>theoretical basics of chromatography, mass spectrometry,</li><li>practical operation of the LC-MS/MS system,</li><li>qualitative and quantitative analysis,</li><li>DDA &amp; DIA screening methods,</li><li>“omics” analyses,</li><li>validation of analytical methods,</li><li>solving basic methodological and technical problems,</li><li>software,</li><li>calibration,</li><li>“tips&amp;tricks”,</li><li>etc...</li></ul><p>We offer training for both novices starting the fascinating adventure of LC-MS/MS analytics, as well as for those who are LC-MS/MS users and are interested in expanding and consolidating their knowledge.</p><h4><strong>Framework training program</strong></h4><ul><li>individual LC-MS/MS training is developed according to the customer's demand</li><li>conducting theoretical and/or practical training at the customer's workplace</li><li>carrying out theoretical and/or practical training in a laboratory in Lodz</li></ul>

Bioanalytic Basic LC-MS/MS training

Basic LC-MS/MS training covers the theoretical basics of mass spectrometry and familiarization with the basic operation of the instrument.

<h4><strong>BASIC INFORMATION</strong></h4><ul><li>TITLE: <strong>Basic LC-MS/MS training</strong></li><li>CATEGORY: <strong>LC-MS/MS training</strong></li><li>LOCATION: <strong>Lodz, PL</strong></li><li>TRAINING TIME: <strong>3 days</strong></li><li>NUMBER OF PARTICIPANTS: <strong>up to 5 people</strong></li><li>EQUIPMENT:<strong> SCIEX QTRAP </strong><span class="ts-pf-details-content"><strong>&amp; </strong></span><strong>QTOF LC-MS/MS</strong></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Bioanalytic_Bioanalytic_Basic_LC_MS_MS_training_fb1382a55b.jpg" alt="Bioanalytic: Bioanalytic Basic LC-MS-MS training." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Bioanalytic_Bioanalytic_Basic_LC_MS_MS_training_fb1382a55b.jpg 205w," sizes="100vw" width="1293" height="987"></p><h4><strong>TRAINING DESCRIPTION</strong></h4><p>Basic LC-MS/MS training covers the theoretical basics of mass spectrometry and familiarization with the basic operation of the instrument. Basic LC-MS/MS training is primarily aimed at those who are new to LC-MS/MS equipment or who wish to become familiar with this analytical technique. During the training, the following will be presented:</p><ul><li>principles of developing and optimizing quantitative and qualitative methods on low (triple quadrupole, QTRAP) and high resolution (QTOF) instruments,</li><li>basic functionality of the software,</li><li>procedures and objectives of instrument calibration,</li><li>principles of maintaining the cleanliness of mass spectrometer operation.</li></ul><h5><strong>Basic LC-MS/MS training - the program</strong></h5><p><span style="font-size:20px;"><strong>Day I</strong></span></p><p><strong>Theoretical classes:</strong></p><ul><li>Introduction to LC</li><li>Introduction to mass spectrometry (basics)</li><li>Quantitative analysis.</li></ul><p><strong>Practical part:</strong></p><p>QTRAP:</p><ul><li>QTRAP scanning modes on the instrument - Q1, , MS2, MRM, demonstration and discussion on the example of a selected pesticide of the fragmentation spectrum and its fragmentation pathway.</li><li>MRM pair formation (manual, semi-automatic, automatic).</li><li>optimization of ion source parameters -T-conector</li><li>explanation of the main parameters related to LC (column selection, gradient vs isocrat, autosampler)</li><li>LC-MS/MS method setup and optimization</li></ul><p>QTOF:</p><ul><li>manual and automatic optimization of MRM<sup>HR</sup></li><li>ion source and LC parameters (transfer from method developed above)</li></ul><p>Sequence of quantitative analysis on both instruments.</p><p><span style="font-size:20px;"><strong>Day II</strong></span></p><p><strong>Quantitative analysis:</strong></p><ul><li>data processing and analysis,</li><li>reporting - Sciex OS (QTRAP, QTOF).</li><li>Discussion of types of integration algorithms (MQ4, autopeak) and integration parameters.</li><li>independent selection of integration parameters and plotting of master curves.</li><li>independent data analysis and generation of analysis report.</li></ul><p><strong>Qualitative analysis:</strong></p><ul><li>Theoretical introduction - introduction to qualitative analysis:</li><li>qwadrupole modes (Prec/NL),</li><li>trap modes (EMS, EPI, MS3),</li><li>QTOF modes (TOF MS, TOF MS/MS).</li><li>mixed methods,</li><li>targeted vs. untargeted analysis,</li><li>DDA (IDA) - discussion of method development,</li></ul><p><strong>Practical part:</strong></p><ul><li>creation of qualitative methods on QTRAP (Prec-IDA, MRM-IDA), other parameters (LC, ion source) as the previous day,</li><li>LightSight - discussion of operation, creation of MRM-IDA multimethod for selected pesticide and analysis of samples (night).</li><li>QTOF - creation of IDA method, other parameters (LC, ion source) as the previous day.</li></ul><p>Sequence of qualitative analysis overnight.</p><p><span style="font-size:20px;"><strong>Day III</strong></span></p><p><strong>Qualitative data analysis:</strong></p><p>QTRAP:</p><ul><li>Discussion of Prec-IDA, MRM-IDA results - what we see in different types of MS and MS/MS scans. Manual review of data and via IDA Explorer (SciexOS).</li><li>Analysis of results in LightSight, comparison with Prec-IDA, for example - advantages/disadvantages</li></ul><p>QTOF:</p><ul><li>search for potentially present compounds in the sample,</li><li>manual comparison of blank vs. test sample,</li><li>manual by XIC extraction (by sum formula),</li><li>Formula finder - derivation of sum formula on TOF MS data and verification of fragmentation on TOF MS/MS data</li><li>search in IDA Explorer mode - application of filters: similarity, isotopic distribution, mass defect,</li><li>database searching,</li><li>Molecule Profiler - demonstration of software capabilities on selected pesticide example,</li></ul><p><strong>Instrument calibration:</strong></p><ul><li>resolution, mass-to-charge ratio, intensity,</li><li>Q1 and Q3, LIT (MS and MS/MS), TOF MS and TOF-MS/MS</li><li>Automation vs. manual calibration,</li></ul><p><strong>LC-MS/MS application examples</strong></p><p><strong>Summary</strong></p><p><strong>Discussion</strong></p>

Bioanalytic Quantitative LC-MS/MS analysis training

The goal of the training is to introduce users to the procedures and capabilities of the LC-MS/MS system and software to achieve sensitivity, selectivity, precision and reproducibility in quantitative analysis.

<h4><strong>BASIC INFORMATION</strong></h4><ul><li>TITLE: <strong>Quantitative LC-MS/MS analysis training</strong></li><li>CATEGORY: <strong>LC-MS/MS training</strong></li><li>LOCATION: <strong>Lodz, PL</strong></li><li>TRAINING TIME: <strong>3 days</strong></li><li>NUMBER OF PARTICIPANTS: <strong>up to 5 people</strong></li><li>EQUIPMENT:<strong> SCIEX QTRAP LC-MS/MS</strong></li></ul><figure class="image"><img style="aspect-ratio:1200/675;" src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Bioanalytic_Bioanalytic_Quantitative_LC_MS_MS_analysis_training_d13b5d8127.jpg" alt="Bioanalytic: Bioanalytic Quantitative LC-MS-MS analysis training." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Bioanalytic_Bioanalytic_Quantitative_LC_MS_MS_analysis_training_d13b5d8127.jpg 245w," sizes="100vw" width="1200" height="675"></figure><h4><strong>TRAINING DESCRIPTION</strong></h4><p>Quantitative LC-MS/MS analysis - the training is designed for laboratory personnel using LC-MS/MS systems for quantitative analysis. The following topics are covered during the training:</p><ul><li>Triple quadrupole spectrometer calibration</li><li>MRM pair formation and optimization</li><li>Optimization of ion source parameters</li><li>Optimization of chromatographic parameters</li><li>Sample preparation using the example of blood drawn on <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1283"><strong>Mitra®</strong></a> samplers (VAMS)</li><li>Matrix effect, internal standards (ISTD), matrix curves</li><li>Validation of the quantitative method</li><li>Reporting of results</li></ul><p>The goal of the training is to introduce users to the procedures and capabilities of the LC-MS/MS system and software to achieve sensitivity, selectivity, precision and reproducibility in quantitative analysis while covering the widest possible linear range of concentrations.</p><h3><strong>Training program</strong></h3><h4><span style="font-size:20px;"><strong>Day I</strong></span></h4><h5><strong>Theoretical part:</strong></h5><p>Triple quadrupole structure, ionization, MRM and sMRM scanning, chromatography, multimethods</p><h5><strong>Practical part:</strong></h5><ul><li>Q1/Q3 calibration (10 Da/s), MS/MS - resolution, m/z, intensity.</li><li>MRM pair formation and optimization (manual, semi-automatic, automatic).</li><li>Ion source optimization - T-concector and FIA</li><li>Gradient vs isocrat, dosing, column selection, temperature selection, other important parameters</li><li>Establishment and optimization of LC-MS/MS method.</li><li>How to take care of MS cleanliness - ionization time programming, multi-way valve, cleaning of ion source and instrument front end</li></ul><p>Sample preparation in pure solvent (standard curve, QC, solvent, solvent+ISTD, test samples), overnight analysis sequence.</p><h4><span style="font-size:20px;"><strong>Day II</strong></span></h4><h5><strong>Practical part - preparation of whole blood samples (Mitra®):</strong></h5><ul><li>Preparation of matrix standard curves</li><li>Preparation of quality control (QC) samples in three concentrations</li><li>Preparation of blank samples (without ISTD and with ISTD).</li><li>Preparation of samples for recovery determination (“pre-spiked” and “post-spiked”)</li><li>Preparation of test samples</li></ul><h5><strong>Theoretical part:</strong></h5><ul><li>Samples in the matrix - discussion of the matrix effect and ways to level it.</li><li>Optimization of sample preparation method and LC-MS/MS method</li></ul><h5><strong>Practical part:</strong></h5><ul><li>Sample extraction from Mitra® samplers for LC-MS/MS analysis.</li><li>Sequence of analysis of prepared samples overnight</li></ul><h4><span style="font-size:20px;"><strong>Day III</strong></span></h4><h5><strong>Theoretical part:</strong></h5><ul><li>Validation of the quantitative LC-MS/MS method</li></ul><h5><strong>Practical part:</strong></h5><ul><li>Software - data integration algorithms, signal smoothing, weighing.</li><li>Matrix curves vs curves in solvent, influence of ISTD (Sciex OS).</li><li>Method validation - validation criteria, determination of LOD, LLOQ, ULOQ, linearity, working range of the method, repeatability, recovery.</li><li>Preparation of summary validation reports</li><li>Reporting of results from test samples - report vs export of data to Excel.</li><li>Summary and discussion.</li></ul>

Bioanalytic QTRAP vs QTOF Quality analysis training

The training includes a presentation of the basic differences in application and a comparison of the capabilities of QTRAP and QTOF instruments in qualitative analysis.

<h4><strong>BASIC INFORMATION</strong></h4><ul><li>TITLE: <strong>QTRAP vs QTOF Quality analysis training</strong></li><li>CATEGORY: <strong>LC-MS/MS training</strong></li><li>LOCATION: <strong>Lodz, PL</strong></li><li>TRAINING TIME: <strong>3 days</strong></li><li>NUMBER OF PARTICIPANTS: <strong>up to 5 people</strong></li><li>EQUIPMENT:<strong> SCIEX QTRAP </strong><span class="ts-pf-details-content"><strong>&amp; </strong></span><strong>QTOF LC-MS/MS</strong></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Bioanalytic_Bioanalytic_QTRAP_vs_QTOF_Quality_analysis_training_18ca66163f.jpg" alt="Bioanalytic: Bioanalytic QTRAP vs QTOF Quality analysis training." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Bioanalytic_Bioanalytic_QTRAP_vs_QTOF_Quality_analysis_training_18ca66163f.jpg 221w," sizes="100vw" width="1000" height="707"></p><h4><strong>TRAINING COURSE DESCRIPTION</strong></h4><p><strong>QTRAP vs QTOF qualitative analysis</strong> - the training is aimed at people who perform analyses related to substance identification or metabolite search in their research work. The training includes a presentation of the basic differences in application and a comparison of the capabilities of QTRAP and QTOF instruments in qualitative analysis. In addition to the theoretical session, participants will undergo a course in the development and optimization of <strong>DDA (IDA)</strong> (QTRAP &amp; QTOF) and <strong>DIA (SWATH) </strong>(QTOF) methods. Analysis and comparison of results will be conducted using <a target="_blank" rel="noopener noreferrer" href="https://sciex.com/products/software/sciex-os-software">SciexOS</a>, <a target="_blank" rel="noopener noreferrer" href="https://sciex.com/products/software/markerview-software">MarkerView</a>, <a target="_blank" rel="noopener noreferrer" href="https://sciex.com/products/software/lightsight-software">LightSight</a> and <a target="_blank" rel="noopener noreferrer" href="https://sciex.com/products/software/molecule-profiler-software">MoleculeProfiler</a> software.</p><h5><strong>Training program</strong></h5><h4><span style="font-size:20px;"><strong>Day I</strong></span></h4><h5><strong>Theoretical part</strong></h5><ul><li>Principle of operation of MS/MS systems</li><li>Differences and capabilities of QTRAP and QTOF</li><li>Comparison of typical analytical procedures and their application</li><li>DDA (IDA) vs DIA (SWATH) methodology.</li><li>Supporting software - LightSight, Molecule Profiler, ACD Labs, MarkerView</li><li>General principles of compound fragmentation</li></ul><h4><span style="font-size:20px;"><strong>Day II</strong></span></h4><p><strong>Objective - to develop methods to search for metabolites of a known substance.</strong></p><h5><strong>QTRAP</strong></h5><ul><li>Development of IDA screening methods (pMRM, Prec/NL, EMS)</li><li>Optimization of LC-MS/MS IDA method</li><li>Data acquisition</li></ul><h5><strong>QTOF</strong></h5><ul><li>Development and optimization of LC-MS/MS IDA and SWATH methods</li><li>Data acquisition</li></ul><h4><span style="font-size:20px;"><strong>Day III</strong></span></h4><p><strong>Objective - identification and profiling of metabolites of a known substance</strong></p><h5><strong>QTRAP data analysis</strong></h5><ul><li>Manual search and identification</li><li>LightSight, MarkerView</li></ul><h5><strong>QTOF data analysis</strong></h5><ul><li>Search and data analysis methods</li><li>Manual search and identification</li><li>IDA vs SWATH</li><li>Automated search and identification - SciexOS, databases</li><li>Molecule Profiler, MarkerView</li></ul><p>Summary and discussion<br>&nbsp;</p>

Bioanalytic QTOF quantitative and qualitative analysis training

The purpose of the training is to introduce users to the capabilities of the LC-HR-MS/MS (QTOF) system in quantitative and qualitative analysis.

<h4><strong>BASIC INFORMATION</strong></h4><ul><li>TITLE:&nbsp;<strong> QTOF quantitative and qualitative analysis training</strong></li><li>CATEGORY: <strong>LC-MS/MS training</strong></li><li>LOCATION: <strong>Lodz, PL</strong></li><li>TRAINING TIME: <strong>3 days</strong></li><li>NUMBER OF PARTICIPANTS: <strong>up to 5 people</strong></li><li>EQUIPMENT:<strong> SCIEX</strong><span class="ts-pf-details-content"><strong> </strong></span><strong>QTOF LC-MS/MS</strong></li></ul><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Bioanalytic_Bioanalytic_QTOF_quantitative_and_qualitative_analysis_training_af1620ae8c.jpg" alt="Bioanalytic: Bioanalytic QTOF quantitative and qualitative analysis training." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Bioanalytic_Bioanalytic_QTOF_quantitative_and_qualitative_analysis_training_af1620ae8c.jpg 221w," sizes="100vw" width="1000" height="707"></p><h4><strong>TRAINING COURSE DESCRIPTION</strong></h4><p><strong>Qualitative and quantitative analysis of QTOF</strong> - the training is designed for laboratory personnel using <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library?instrumentationItems=30&amp;mainauthorItems=55"><strong>high-resolution (HR) LC-MS/MS</strong></a> systems for qualitative and quantitative analysis. The following topics are covered during the training:</p><ul><li><strong>QTOF spectrometer calibration</strong></li><li><strong>Targeted and untargeted methods</strong></li><li><strong>Quantitative analysis (TOF MS, MRMhr)</strong></li><li><strong>Qualitative and quantitative analysis - DDA (IDA) vs DIA (SWATH) methodology</strong></li><li><strong>Software and its use in high-resolution data analysis</strong></li><li><strong>Reporting of results</strong></li></ul><p>The purpose of the training is to introduce users to the capabilities of the LC-HR-MS/MS (QTOF) system in quantitative and qualitative analysis. To point out the advantages of high resolution in identifying or confirming the presence of substances in a sample and also the strengths of modern QTOF systems in parallel quantitative analysis.</p><h3><strong>Training program</strong></h3><h4><span style="font-size:20px;"><strong>Day I</strong></span></h4><h5><strong>Theoretical part</strong></h5><ul><li>The principle of operation and capabilities of the QTOF system</li><li>Comparison of typical analytical procedures and their application</li><li>Targeted and quantitative analysis (TOF MS vs MRMhr)</li><li>DDA (IDA) vs DIA (SWATH) methodology.</li><li>Supporting software - Molecule Profiler, ACD Labs, MarkerView</li><li>General principles of compound fragmentation</li></ul><h4><span style="font-size:20px;"><strong>Day II</strong></span></h4><p><strong>Objective</strong> - to develop methods for quantitative analysis, confirmation or search for metabolites of a known substance, general characterization of the sample.</p><h5><strong>Practical part:</strong></h5><ul><li>Creation and optimization of the MRMhr targeted method</li><li>Creation and optimization of a non-targeted method IDA</li><li>Creation and optimization of the non-targeted method SWATH</li><li>Data acquisition (overnight)</li></ul><h4><span style="font-size:20px;"><strong>Day III</strong></span></h4><p><strong>Objective</strong> - quantitative analysis, confirmation of the presence or identification of metabolites of a known substance, general characterization of the sample (identification of compounds present in the sample), profiling.</p><h5><strong>Practical part:</strong></h5><ul><li>Quantitative analysis - TOF MS vs MRMhr</li><li>Methods for searching and analyzing data</li><li>IDA vs SWATH data</li><li>Manual search and identification</li><li>Automated search and identification - SciexOS, databases</li><li>Molecule Profiler, MarkerView</li><li>Summary and discussion</li></ul>

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