≥99% HPLC Purity MS Confirmed Janoshik COA In-House SPPS 8-Region Worldwide Shipping
Compound type: Unesterified Aqueous Testosterone — Immediate-Onset AR Agonist CAS Number: 58-22-0
What is Testosterone Suspension?
Testosterone Suspension is unesterified testosterone in an aqueous suspension vehicle. Without an ester, there is no hydrolysis delay — testosterone is bioavailable immediately upon injection, reaching peak plasma levels within hours. Half-life is approximately 24 hours (much shorter than any ester). This makes Testosterone Suspension the model compound for acute androgen pharmacology — enabling precise control over the timing and duration of testosterone exposure. The aqueous suspension vehicle (not oil) also produces different absorption kinetics, with crystalline testosterone particles dissolving at the injection depot.
Research Applications
Immediate-Onset Androgen
No ester delay — testosterone bioavailable within hours of injection
Acute AR Response
Rapid androgen receptor occupancy for acute signalling cascade studies
HPG Axis Dynamics
Fastest-onset HPG suppression of any testosterone form
Androgen Washout
Shortest half-life (~24h) — rapid clearance research
Depot Pharmacokinetics
Aqueous suspension depot dissolution dynamics vs. oil-based esters
How does Testosterone Suspension differ from esterified forms?
Testosterone Suspension contains no ester — testosterone is free and bioavailable immediately upon injection, with peak levels within hours. Half-life is ~24 hours vs. 2–34 days for esterified forms. It is the fastest-acting and fastest-clearing testosterone form, making it ideal for acute androgen pharmacology and rapid washout research.
How is Testosterone Suspension supplied?
QSC Testosterone Suspension is an aqueous suspension — not oil-based. Shake well before drawing as the suspended particles settle. Use a slightly larger bore needle than for oil-based injectables. Store at room temperature away from freezing.
What purity is QSC Testosterone Suspension?
QSC Testosterone Suspension is ≥99% HPLC pure with MS-confirmed unesterified testosterone identity on every batch. COA verifiable at verify.janoshik.com.
Research Use Only: All QSC compounds are sold strictly for laboratory research purposes only. Not for human consumption, veterinary use, or any other application. Researchers are responsible for compliance with local regulations.
QSC Network
Compound reference, COA verification, and regional warehouse information across the QSC network.
