Testosterone blood test

Key facts A testosterone blood test shows how much testosterone is in your body. There are many reasons why you might need a testosterone blood test. Your doctor will explain your test results. What is being tested? Testosterone is the main male sex hormone. It’s produced by both males and females, although usually in much greater amounts in males. Testosterone helps the male sex organs to mature and produce sperm. It helps with the growth of facial and body hair and deepening of the voice. It also affects your sex drive. Testosterone plays a part in the development of your