Also known as: testicular bioregulator, Khavinson testicular peptide
Brand names: Testagen (Peptides by Khavinson)
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Quick Summary
Testagen is a tripeptide bioregulator (Lys-Asp-Glu) from the Khavinson Institute, targeted to testicular tissue support and reproductive function. It is proposed to normalize Leydig cell function and spermatogenesis by acting as a gene expression regulator in testicular tissue.
Testagen is a tripeptide bioregulator (Lys-Asp-Glu) from the Khavinson Institute, targeted to testicular tissue support and reproductive function. It is proposed to normalize Leydig cell function and spermatogenesis by acting as a gene expression regulator in testicular tissue. Russian research suggests improvements in testosterone levels and spermatogenic markers in aging men and in hypogonadal states following 10-20 day injection cycles.
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Storage Stability
Lyophilized
6-12 months (2-8°C)
Reconstituted
~30 days (2-8°C)
Room temp
Avoid
Mechanism of Action
Leydig Cell Support
Testagen is proposed to enter Leydig cells and modulate expression of steroidogenic enzymes (StAR, CYP11A1, CYP17A1), supporting endogenous testosterone synthesis pathway.
Sertoli Cell Function
May support Sertoli cell protein synthesis relevant to spermatogenesis, complementing FSH/LH-dependent mechanisms.
Research Protocols
SubQ Protocol
1-2 mg subcutaneously daily for 10-20 days. One or two cycles per year in Russian longevity protocols.
Lab Monitoring
Total testosterone, LH, FSH, and semen analysis before and after cycle to assess response.
Storage & Handling
Refrigerate at 2-8°C. Freeze lyophilized for long-term storage. Reconstitute with sterile water immediately before use.
References
[1]Khavinson VKh, et al. "Peptide bioregulators and genitourinary system." Bull Exp Biol Med, 2002.