Education
TRT Basics: What Is Testosterone Replacement Therapy?
A general educational overview of what testosterone replacement therapy is and why people track it.
Reviewed by GoodDaily Editorial Team · Published 2026-08-10
The general definition
Testosterone replacement therapy (TRT) refers to prescribed treatment intended to restore testosterone to a typical range in people whose levels are clinically low, as determined through lab testing and a licensed healthcare professional’s evaluation. It is a defined medical treatment, not a general wellness or performance product.
How it’s typically described in reference material
General medical references describe TRT as involving lab-confirmed diagnosis, an individualized treatment plan set by a clinician, and ongoing monitoring such as periodic bloodwork. The specific form, schedule, and monitoring plan vary by person and by prescriber.
Why people keep a private log
Because TRT is usually a long-running, recurring routine, many people find it useful to keep a private record of reminders, notes, and completed entries over time, separate from clinical monitoring done by their prescriber. A personal log can make it easier to have organized information on hand, including for a follow-up appointment.
What this article does not cover
This overview does not describe dosing, injection frequency, monitoring protocols, or expected outcomes, and it is not a substitute for a clinician’s evaluation. Only a licensed healthcare professional can determine whether TRT is appropriate for a given individual.
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