A testosterone replacement therapy (TRT) blood test is the first essential step in assessing low testosterone in men.
Before any treatment is considered, a comprehensive blood test is required to measure testosterone levels and assess key health markers that influence treatment safety and suitability. Symptoms alone are not enough to diagnose low testosterone — blood testing provides objective clinical insight.
A TRT blood test typically includes:
Total and free testosterone levels
Sex hormone–binding globulin (SHBG)
Key health and safety markers
Your results are reviewed by a qualified clinician, who will determine whether further investigation or treatment may be appropriate.
TRT blood testing in the UK must be carried out in line with clinical guidelines and reviewed by a prescriber before any treatment can be offered.
All treatments are subject to clinical assessment and medical suitability.
