Testagen Research Peptide
Testagen is a very short peptide, a chain of four amino acids.
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Research Use Only · Not for human or veterinary consumption.
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Certificates of Analysis
Every batch is tested by an independent laboratory before release.
Verify Batch. Lot-level COA, Batch DF/TST/062026. Check the batch number printed on your vial against the certificate below, which reports the tests run on it.
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What is Testagen?
Testagen is a very short peptide, a chain of four amino acids. It comes from a Russian research program in St Petersburg that has built a series of these short chains since the 1970s. Chemists worked out its recipe from the mix of peptides found in the pituitary gland, a small gland at the base of the brain. It has been studied in human cells grown in a dish, in birds whose pituitary gland had been removed, and, oddly, on copper. Two small Russian reports also describe men with hormone or fertility problems who were given a product sold under this name, but neither states the product's sequence.
Product information reviewed by Dr. Martina Rossi, PhD
Scientific Contributor and Reviewer · Reviewed
Testagen Research & Reference
What Testagen does in published studies, and how to work with it in the laboratory, are covered in full on two dedicated pages rather than summarised here, so neither the evidence nor the handling detail is cut short.
Technical Specs
Labeled quantity is net peptide content, not gross salt weight.
Testagen Batch Results
Batch DF/TST/062026
- Laboratory
- Kovera Labs
- Certified
- August 13, 2026
- Sample
- 20 mg vial
- Report
- KVR-2026-53D959
An independent laboratory, Kovera Labs, tested a sample from this batch. These are the results on its certificate.
Purity
Pass99.796%
RP-HPLC, C18 column, 214 nm
Identity
PassConfirmed
LC-MS
Purity is an HPLC figure: the main peak’s share of everything the detector recorded at one wavelength. It’s not a weight. What a purity figure counts →
Check it with the lab. Kovera Labs’ verification page looks a certificate up by its report number. Product, batch, date and results should match this page.
Chromatogram
RP-HPLC · C18 · DAD 214 nm
Frequently Asked Questions
Is Testagen third-party tested for purity?+−
Yes. Every batch of Testagen is tested by an independent third-party laboratory using HPLC and MS-UPLC, confirming purity and mass identity before the batch is released. Pure Peptides does not test its own material.
Can I see the Certificate of Analysis before buying?+−
Yes. The Certificate of Analysis for the batch currently in stock can be viewed and downloaded directly on this page, before you place an order. Each certificate states the batch number, the measured purity, and the date of analysis, and can be verified independently with the issuing laboratory using the report number it carries.
What does "Research Use Only" mean?+−
It means Testagen is supplied for in-vitro laboratory research and for no other purpose, and must not be administered to humans or animals. Testagen is legal to purchase in the United States for in vitro and non-clinical laboratory research. It carries no FDA approval or therapeutic indication for human use. Testagen is not a scheduled substance under the Controlled Substances Act. Sold strictly for qualified research use, not human or veterinary administration.
How is Testagen shipped and stored?+−
Testagen ships from US stock with cold-chain packaging and full tracking; orders placed before noon EST on business days are typically dispatched the same business day. On arrival, store the lyophilized powder at -20°C or below, dry and protected from light.
Peptide Bioregulators
Related Compounds
From the blog
Background and context on this compound.
Reviewed for scientific accuracy
Dr. Martina Rossi, PhD
PhD, Université Grenoble Alpes · Scientific Contributor and Reviewer
Dr. Rossi's doctoral research at Université Grenoble Alpes examined the vascular functions of bone morphogenetic proteins. Her peer-reviewed work spans cell and molecular biology, vascular biology, and gene therapy, in journals including Cardiovascular Research, Scientific Reports, and Brain Sciences. She reviews Pure Peptides' product, reference, and research pages for scientific accuracy against the sources they cite.