Follistatin Analysis

The Follistatin Analysis is a targeted laboratory test designed to confirm the identity and determine the amount of follistatin in lyophilised vials and raw active pharmaceutical ingredient (API) powders.

For lyophilised samples, results are reported in milligrams per vial. Raw API powders can be evaluated using an alternative result format based on purity in % (m/m). Follistatin is a protein rather than a peptide, and peptide purity is therefore not determined as part of this analysis.

About Follistatin

Follistatin is a naturally occurring glycoprotein that binds activin with high affinity and regulates its biological activity. It also interacts with other members of the TGF-β superfamily and has been studied in connection with processes including muscle growth, reproduction, and tissue regulation.

Follistatin occurs in several molecular forms and is widely used as a research target in studies of activin signalling and related biological pathways.

Key Features

• Targeted identification and quantification of follistatin
• Suitable for lyophilised vials and raw API powders
• Analysis by HPLC
• Results for lyophilised samples reported in mg per vial
• Alternative result format based on purity in % (m/m)
• Minimum sample amount of one whole unopened vial with lyophilisate
• Minimum sample amount of 30 mg for raw API powder
• Average turnaround time of 7 business days

Analysis Parameters

• Target compound: Follistatin
• Testing method: HPLC
• Result format for lyophilisate: mg per vial
• Alternative result format: Purity in % (m/m)
• Minimum sample amount for lyophilisate: One whole unopened vial with lyophilisate
• Minimum sample amount for raw API powder: 30 mg in a sealed glass vial to prevent the sample from absorbing moisture
• Average turnaround time: 7 business days

Important Notice

• Follistatin is a protein rather than a peptide. Peptide purity is therefore not measured as part of this analysis.
• For lyophilised samples, one whole unopened vial containing lyophilisate is required.
• Raw API powder should be supplied as at least 30 mg in a sealed glass vial to minimise moisture absorption.

Optional Additional Analyses

The following optional laboratory services are available:

• Complete Raw Analytical Data
• Fentanyl Screening
• Alternative Result Format: Purity in % (m/m)
• Batch Variance Testing
• pH Measurement
• Endotoxin Analysis
• LCMS Screening For Peptide Contamination
• Sterility Testing (TAMC + TYMC)
• Heavy Metals Analysis (As, Cd, Pb, Hg)
• Additional Laboratory Report