All guides
Testosterone

Testosterone and TRT: the systems around the medicine

A look at prescription treatment, monitoring, grey-market listings and the difference between medical evidence and online claims.

01

A medical pathway is more than a vial

Testosterone replacement therapy describes diagnosis, prescribing, a selected formulation and ongoing clinical monitoring. Comparing only the price of a labelled product leaves out the professional assessment and follow-up that define the medical pathway.

02

Formulations and ester names

Enanthate, cypionate, propionate and undecanoate describe esterified forms with different release characteristics. A listing should preserve the exact active ingredient, concentration and presentation instead of collapsing every formulation into the word “testosterone”.

03

Keep evidence and provenance apart

Published evidence about an authorised testosterone medicine does not verify an unknown product. Source history, batch documentation and analytical testing belong to the provenance record, while clinical literature belongs to the compound record.

Next guideAAS listings, law and source history