99% Pharmaceutical-Grade Purity - Rigorously purified testagen for male endocrine balance, testosterone synthesis and testicular tissue function research use. 1.Lab-Verified 5mg/10mg Vials - Precisely formulated sterile lyophilized powder for laboratory and research applications. 2.Endocrine Regulation Benefits - Short-chain bioregulatory tetrapeptide for Leydig cell activity, HPG axis balance and spermatogenesis related research studies. 3.Third-Party HPLC/LC-MS Tested - Each batch passes strict purity and identity testing with complete COA documentation. 4.Easy Reconstitution - Quickly dissolved with bacteriostatic water for convenient laboratory research use.