What is this test?
Dihydrotestosterone is an active metabolite of testosterone that is involved in the development of male genitalia, hair growth and prostate function.
Why might it be ordered?
- In specialized evaluation of androgen exchange, development or abnormal hair growth.
- For follow-up in certain endocrine conditions or treatment when prescribed.
What sample is needed?
A healthcare professional collects a venous blood sample. Depending on the method, the laboratory uses serum or plasma.
How should you prepare?
Tell the laboratory about all medicines, hormone treatments, vitamins and supplements you take. Do not stop or change treatment unless your clinician tells you to. Follow any instructions about fasting and the time of collection.
How should you understand the result?
The value is considered with testosterone, SHBG, age, gender and medications taken. It does not identify the cause of hair loss or prostate complaints on its own. Your result is interpreted using the reference interval on the laboratory report and in the context of your symptoms, medical history and other test findings.
Sources and editorial status
This patient-facing text is an editorial draft. It should be approved by a laboratory physician before official publication.