Product Introduction
Testagen is an organ-specific synthetic tetrapeptide bioregulator developed by Professor Vladimir Khavinson’s research team at the St. Petersburg Institute of Bioregulation and Gerontology, serving as the core active fragment of testicular polypeptide complex Testoluten. Distinct from conventional receptor-binding peptides, this ultra-short sequence penetrates cell and nuclear membranes directly to bind DNA and histone proteins, exerting epigenetic regulation on reproductive and endocrine gene expression without suppressing endogenous hormone secretion.
Core research mechanisms:
Activate steroidogenic genes in testicular Leydig cells
Upregulate key testosterone synthesis enzymes including StAR, CYP11A1 and 3β-HSD, restore the natural testosterone production pathway of aging testicular tissue, widely applied in androgen balance and male reproductive aging research.
Regulate Hypothalamic-Pituitary-Gonadal (HPG) axis
Improve pituitary sensitivity to gonadotropin signals, normalize LH/FSH feedback loop, balance the whole reproductive endocrine system without the hormonal shutdown side effects caused by exogenous testosterone supplementation.
Thyroid endocrine homeostasis
Modulate pituitary-thyroid signaling pathways, stabilize thyroid hormone secretion and relieve age-related thyroid function decline in preclinical models.
Anti-senescence & tissue protection
Slow testicular cell senescence, reduce oxidative inflammatory damage to reproductive tissue, support long-term gonadal function maintenance in gerontology research.
Optimize reproductive microenvironment
Regulate local immune factors in testicular tissue, alleviate chronic low-grade inflammation that impairs hormone synthesis and gamete production.
Our Testagen Product Competitive Advantages
Ultra-high purity ≥99%
Full moisture removed without preservatives, fully locks complete peptide biological activity. Lyophilized solid form avoids hydrolysis and oxidation during long-distance air & sea cross-border shipping, stable potency with a 24-month shelf life.
GMP clean-room sterile production
Independent single sealed vial packaging to avoid cross-contamination. Custom private labels, bottle sizes and bulk packing service available for global resellers and lab suppliers.
Excellent water solubility
Rapidly dissolves in sterile bacteriostatic water to form clear transparent solution without sediment, convenient for precise laboratory dosage preparation for in vivo and in vitro trials.
Complete professional technical support
We supply detailed reconstitution guide, storage specification, laboratory dosage reference and full batch traceability documents for all distributors.
Storage & Reconstitution Instructions
Unopened lyophilized powder: Long-term storage at -20°C away from light and humidity, shelf life up to 24 months; short transit storage at 2–8°C is acceptable.
Recommended solvent: Sterile bacteriostatic water
Operation tip: Slowly solvent along the inner vial wall and swirl gently; violent shaking will cause peptide aggregation and activity loss.
Reconstituted liquid: Seal tightly and refrigerate at 2–8°C, finish all usage within 14 days; avoid repeated freeze-thaw cycles.
Global Wholesale Cooperation Support
Flexible minimum order quantity & tiered large-volume discount for stable VIP long-term partners
Low-risk dedicated shipping lines for USA, EU, Brazil, Australia with reduced customs detention probability
Exclusive one-on-one VIP account manager, fast working-hour response and professional reshipping solutions for logistics issues
TG (KEDG) Lyophilized Tetrapeptide | 99% High Purity Testicular Bioregulator
Khavinson-series ultra-short epigenetic peptide targeting testicular endocrine function.
Core research directions: boost natural testosterone synthesis, balance HPG axis hormones, protect gonadal tissue, relieve reproductive senescence and stabilize thyroid endocrine activity. No suppression of endogenous hormone production.
✅ Purity ≥99%
✅ Available specs: 10mg / 20mg / 50mg per sterile vial
✅ Freeze-dried stable form suitable for worldwide cross-border delivery
✅ Clear solution after reconstitution, simple lab operation
✅ Custom packaging & competitive bulk wholesale pricing
Name:Testagen
CAS: 1026993-38-3
Appearance: White Powder
Purity (HPLC): ≥99.0%
Single Impurity (HPLC): ≤1.0%
Sodium Content (HPLC): 5.0%-12.0%
Moisture Content (Karl Fischer): ≤10.0%
Peptide Content: ≥80.0%
Storage: Store at 2-8 degrees Celsius in a dry and cool place.
Packaging: 20mg*10vials
Intended Use: For scientific research purposes
Shipping conditions: Shipped at ambient temperature as a non-hazardous chemical. The product is chemically stable and can withstand the transit times (spanning several weeks) associated with standard shipping and customs clearance.
Storage conditions: Store in a dry place, protected from light; store at 0–4°C for short-term use (days to weeks) and at -20°C for long-term storage (months to years).
Solubility: To be determined
Shelf life: >2 years when stored properly
Pharmaceutical formulation: To be determined
Stock solution storage: Store at 0–4°C for short-term use (days to weeks) and at -20°C for long-term storage (months).
United States
