Answer
Symptoms alone are insufficient. Deficiency should be confirmed by two separate testosterone measurements, and other causes should be considered.
Sources for this answer
- Testosterone undecanoate 1000 mg/4 ml solution for injection — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.