Follistatin lab tests
7 certificates of analysis for Follistatin are on file, from 6 shops and 6 labs. The latest was tested on .
These are certificates shops have chosen to publish, verified for authenticity before listing. Because shops decide which COAs to make public, the set reflects the batches they published rather than every production batch — a selection bias we state openly. What shop COAs show →
What the Follistatin record shows
Follistatin's record holds 7 certificates from 6 shops, tested by 6 labs between January 2026 and May 2026. Reported HPLC purity ran from 97.57% to 99.80% (median 99.50%). Measured content ran from 60% to 132% of the label (median 108%); 1 vial came in under 90%. All 7 vials were labelled 1 mg. 1 certificate includes an endotoxin result.
Generated from the table below · updates with every new certificate
Every published Follistatin test
| Tested | Shop | Lab | Purity | Measured vs label | Endotoxin | Record |
|---|---|---|---|---|---|---|
| Grey Market Peptide | freedomdiagnosticstesting.com | 97.67% | 1.08 / 1 mg 108% of label | — | View record → | |
| RC Peptides | Janoshik Labs | 97.57% | 0.6 / 1 mg 60% of labelCheck label | — | 003 | |
| Peptidology | Vanguard Laboratory | 99.50% | 1.02 / 1 mg 102% of label | — | 1668 | |
| Pure Health Peptides | Bioviridian | 99.80% | 1.32 / 1 mg 132% of label | — | CHA-011926 | |
| Pure Health Peptides | Ethos Analytics | 99.00% | 1.08 / 1 mg 108% of label | — | CHA-011526 | |
| 24Peptides | liquilabs | 99.80% | 1.07 / 1 mg 108% of label | Pass | GF122025092 | |
| Peptide Pros | Bioviridian | 99.80% | 1.14 / 1 mg 114% of label | — | T10125 |
Measured amount in amber when it is under 90% or over 130% of the label; Check label when it is under 80% or over 150%. Records without a lot number link as View →.
Seven checks for any Follistatin certificate
- Batch-matched and independent. The certificate names the lot in your hands and comes from a lab the vendor neither owns nor pays.
- Purity against the range. Read the figure against what other certificates for this compound report. How to read HPLC and mass-spec results
- Mass-spec identity. Only mass spectrometry shows which molecule is in the vial.
- Net content, measured. Purity and quantity are separate questions. Why 10 mg isn't 10 mg
- Endotoxin on the batch. A missing line means not tested, not passed. Endotoxin testing and LAL interpretation
- A lab you can check. Named on the certificate, with a way to verify it. Testing labs we track · Red flags in a certificate of analysis
- What no test shows. A clean certificate says nothing about efficacy, dosing or long-term safety.
Related lab tests
More on Follistatin
Labs with Follistatin tests on file (6): freedomdiagnosticstesting.com, Janoshik Labs, Vanguard Laboratory, Bioviridian, Ethos Analytics, liquilabs