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A Testosterone, Bioavailable test measures the amount of testosterone that is readily available in your bloodstream for use by your body. It includes measurements of total testosterone, free testosterone, and bioavailable testosterone, as well as sex hormone-binding globulin (SHBG), which binds to and regulates the availability of testosterone in the blood.
There are several reasons why your doctor might order a Testosterone, Bioavailable test:
Symptoms of low testosterone: Testosterone is an important hormone for both men and women, and low levels can cause a variety of symptoms such as decreased sex drive, fatigue, muscle weakness, and depression.
Evaluation of fertility: Testosterone plays a role in male fertility, and a Testosterone, Bioavailable test may be ordered in men with infertility or subfertility.
Monitoring testosterone replacement therapy: If you are receiving testosterone replacement therapy, your doctor may order a Testosterone, Bioavailable test to monitor the effectiveness of your treatment.
Evaluation of certain medical conditions: Testosterone levels may be affected by certain medical conditions such as polycystic ovary syndrome (PCOS), pituitary gland disorders, and adrenal gland disorders.
It’s important to note that testosterone levels can vary throughout the day, and multiple tests may be necessary to confirm a diagnosis of low testosterone. Your doctor will consider your specific medical history and symptoms when deciding which tests to order.
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