SHBG

SHBG, or sex hormone-binding globulin, is a protein produced by the liver that transports sex hormones like testosterone and estrogen in the blood. Its levels fluctuate based on factors like age, sex, and obesity, and it plays a role in regulating the amount of active hormones available to the body's tissues.

SHBG blood test measures these levels, which can help diagnose conditions related to sex hormone imbalances, such as polycystic ovary syndrome (PCOS) or hypogonadism.