MOLECULAR INFORMATION
Molecular information
- Length
- 4 amino acids
- Type
- Tetrapeptide bioregulator · claimed testicular tissue modulator
Amino acid sequence
Lys-Glu-Asp-Gly Testagen is one of the Khavinson family of “short bioregulator peptides”.
Claims vs evidence
- Testicular tissue support — preclinical only, single-group
- Testosterone biosynthesis / spermatogenesis — claimed; human RCT absent
Why we grade it D
Single-source evidence pattern. See the broader family entry on Epitalon for the methodological critique that applies to all Khavinson bioregulator peptides.
Frequently asked questions
- What is Testagen?
- A short tetrapeptide (Lys-Glu-Asp-Gly) from the Khavinson "bioregulator" family. Claimed to act on testicular tissue to support testosterone biosynthesis and spermatogenesis.
- Is Testagen authorised?
- No — no Western regulator has authorised it. Sold grey-market with claims that exceed the published data.
- Why grade D?
- Same pattern as the rest of the Khavinson peptide family — extensive single-source literature, no independent Western replication, mechanism framework not recognised in mainstream endocrinology.