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Dec 5

Testosterone Levels Test: MedlinePlus Lab Test Information

What is a testosterone levels test?

Testosterone is the main sex hormone in males. During a boy’s puberty, testosterone causes the growth of body hair, muscle development, and deepening of the voice. In adult men, it controls sex drive, maintains muscle mass, and helps make sperm. Women also have testosterone in their bodies, but in much smaller amounts.

This test measures the levels of testosterone in your blood. Most of the testosterone in the blood is attached to proteins. Testosterone that is not attached to a protein is called free testosterone. There are two main types of testosterone tests:

Testosterone levels that are too low (low T) or too high (high T) can cause health problems in both men and women.

Other names: serum testosterone, total testosterone, free testosterone, bioavailable testosterone

A testosterone levels test may be used to diagnose several conditions, including:

You may need this test if you have symptoms of abnormal testosterone levels. For adult men, it’s mostly ordered if there are symptoms of low T levels. For women, it’s mostly ordered if there are symptoms of high T levels.

Symptoms of low T levels in men include:

Symptoms of high T levels in women include:

Boys may also need a testosterone levels test. In boys, delayed puberty can be a symptom of low T , while early puberty may be a symptom of high T.

A health care professional will take a blood sample from a vein in your arm, using a small needle. After the needle is inserted, a small amount of blood will be collected into a test tube or vial. You may feel a little sting when the needle goes in or out. This usually takes less than five minutes.

You don’t need any special preparations for a testosterone levels test.

There is very little risk to having a blood test. You may have slight pain or bruising at the spot where the needle was put in, but most symptoms go away quickly.

Results mean different things depending on whether you are a man, woman, or boy.

For men:

For women:

For boys:

If your results are not normal, it doesn’t necessarily mean you have a medical condition needing treatment. Certain medicines, as well as alcoholism, can affect your results. If you have questions about your results, talk to your health care provider.

Men who are diagnosed with low T levels may benefit from testosterone supplements, as prescribed by their health care provider. Testosterone supplements are not recommended for men with normal T levels. There is no proof they provide any benefits, and in fact they may be harmful to healthy men.

See the article here:
Testosterone Levels Test: MedlinePlus Lab Test Information

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