Testagen 20mg | 10-Vial Kit | Testicular Tissue Bioregulator
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Testagen 20mg | 10-Vial Kit | Khavinson peptide bioregulator for testicular tissue — Leydig cell function, testosterone biosynthesis pathway, and male reproductive geroprotection research. ≥99% HPLC, Janoshik COA. Research use only.
* The information on this page is a summary and is not intended to cover all available information about this medication. It does not cover all possible uses, directions, precautions, drug interactions or adverse effects and is not a substitute for the expertise and judgement of your healthcare professional.
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What is Testagen?
Testagen is a tetrapeptide bioregulator (Lys-Glu-Asp-Leu) from the Khavinson programme targeting testicular tissue. Studied for Leydig cell gene expression normalisation, testosterone biosynthesis pathway modulation, and age-related androgen decline models. Research use only.
Research Applications
Leydig Cell Biology
Testosterone biosynthesis, StAR protein expression, steroidogenesis
Testicular Geroprotection
Age-related Leydig cell atrophy, late-onset hypogonadism models
Spermatogenesis Research
Sertoli cell support, sperm cell development, testicular gene expression
HPG Axis Studies
LH receptor sensitivity, gonadotropin feedback, pituitary-gonadal axis
Androgenic Gene Expression
AR-target gene profiles, SHBG modulation, androgen metabolism
Quick Specs
| Form | Lyophilized powder |
| Purity | ≥99% by HPLC — every batch |
| CAS Number | N/A — proprietary tetrapeptide |
| Molecular Formula | Lys-Glu-Asp-Leu tetrapeptide |
| Identity | MS molecular weight confirmed — every batch |
| Peptide Type | Testicular Tissue Bioregulator |
| COA | Janoshik-independent, publicly verifiable |
| Manufacture | In-house Fmoc SPPS — Qingdao, China |
| Storage | -20°C sealed | 2–8°C reconstituted (4 weeks) |
| Shelf Life | 24 months (unopened) |
Certificate of Analysis (COA)
Frequently Asked Questions
Frequently asked questions
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A seemingly elegant design can quickly begin to bloat with unexpected content or break under the weight of actual activity. Fake data can ensure a nice looking layout but it doesn’t reflect what a living, breathing application must endure. Real data does.
Websites in professional use templating systems. Commercial publishing platforms and content management systems ensure that you can show different text, different data using the same template. When it’s about controlling hundreds of articles, product pages for web shops.
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