SHBG (SEX HORMONE BINDING GLOBULIN)

SEX HORMONE BINDING GLOBULIN (SHBG)

This test measures the level of sex hormone binding globulin (SHBG) in your blood. SHBG is a protein made by your liver. It binds tightly to 3 sex hormones found in both men and women. These hormones are estrogen, dihydrotestosterone (DHT), and testosterone. SHBG carries these 3 hormones throughout your blood.

Sex hormone-binding globulin (SHBG) or sex steroid-binding globulin (SSBG) is a glycoprotein that binds to androgens and estrogens. 

Changes in SHBG levels can affect the amount of hormone that is available to be used by the body's tissues. This test measures the level of SHBG in the blood and is most often used to help evaluate patients for testosterone deficiency or excess.