Testosterone
Testosterone is the primary male sex hormone (androgen) produced by the testes. It plays a key role in the development of male sexual characteristics such as body and facial hair and a deep voice. Testosterone also plays an important part in maintaining sex drive, sperm production, and muscle strength.
Test details
Sample type
Blood
Time of day
Samples should be collected between 7-9 am
Fasting required
No
Results timeframe
Within 7 days
Preparation
No special preparation required
What's measured in this test
Testosterone
Measures male sex hormone level.
Common reasons for testing
- Evaluating sexual development and function – Assesses testosterone levels in individuals experiencing delayed or early puberty, erectile dysfunction, or infertility.
- Investigating symptoms of hormonal imbalance – Such as decreased libido, fatigue, depression, or reduced muscle mass.
- Monitoring hormone replacement therapy – Ensures appropriate testosterone levels during treatment.