Testagen 20mg | 10-Vial | Testicular Tissue Bioregulator

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.

✓ 99%+ Purity ✓ COA Available
✓ Free Shipping on All Orders ✓ Ships from China (🇨🇳)

$260

or
SKU: QSC-TG20-TESTAGEN-20MG-10VIAL
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QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SPPSChina Warehouse

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)

For the latest Certificate of Analysis (COA), please email us with your request.

Frequently Asked Questions

How do I reconstitute Testagen?
Add 1–2 mL bacteriostatic water to the lyophilized vial and swirl gently until clear. Dissolves within 1 minute.
How should Testagen be stored?
Store lyophilized vials at −20°C. Reconstituted solution is stable at 2–8°C for up to 4 weeks.
What is Testagen used for in longevity research?
Testagen is primarily studied for age-related Leydig cell decline and the late-onset hypogonadism model. Research from the Khavinson institute suggests it normalises steroidogenic gene expression in testicular tissue as a geroprotective intervention.
🧪 Peptide Research Tools: Use QSC’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌏 Shipping: China warehouse — 7–14 day global delivery

Source: PubMed / NCBI  ·  Last 10 years  ·  Refreshed every 24 hours  ·  For research reference only — not clinical guidance.

⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION

QSC products are strictly for in vitro and in vivo laboratory research. Not intended for diagnostic, therapeutic, or personal use.

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Research Use Disclaimer

All QSC products are strictly for laboratory, scientific, and research use only. They are not for human consumption, medical treatment, diagnosis, or disease prevention.

By purchasing or using QSC products, you confirm:

  • You are a qualified researcher or acting under the supervision of one.
  • Products will only be used for legitimate research purposes.
  • Products are not evaluated by the FDA or any regulatory authority for human use.
  • You assume all responsibility for legal compliance, proper handling, and storage.
  • You meet the legal age requirement in your jurisdiction.
No Warranty: Products are sold “as is,” with no express or implied warranties regarding efficacy, safety, or suitability. Results in research may vary. QSC is not responsible for outcomes, interpretations, or conclusions drawn from any studies conducted using these products.
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General Safety & Handling

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Not for Human Use

These compounds are for research only. Any off-label, personal, or clinical use is strictly outside the intended scope of supply.

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PPE Required

Always use appropriate personal protective equipment (gloves, lab coat, eye protection) when handling peptides.

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Storage Compliance

Follow product-specific storage conditions to maintain identity, purity, and biological activity.

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Proper Disposal

Dispose of all materials in accordance with institutional biosafety, chemical waste, and hazardous material protocols.

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Verify Quality

Janoshik COAs are available on every product page. Verify batch identity (MS confirmed) and purity (≥99% HPLC) before use.

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Peptide Storage Guidelines

🌑 Light-protected💧 Low moisture🌡️ Stable temperature🔬 Sterile handling

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