SEX HORMONE BINDING GLOBULIN (SHBG)

The sex hormone-binding globulin (SHBG) test measures the level of SHBG, a protein that binds to sex hormones such as testosterone and estrogen, in the blood. SHBG regulates the availability of sex hormones to tissues. This test is used to diagnose and monitor conditions affecting hormone levels, such as polycystic ovary syndrome (PCOS), hypogonadism, and androgen-secreting tumors. Elevated SHBG levels can indicate hyperthyroidism or liver disease, while low levels suggest conditions such as PCOS or hypothyroidism. The SHBG test provides valuable information for assessing hormone balance, diagnosing underlying conditions, and guiding treatment decisions.