Testosterone can also be bound to albumin, a protein in the blood. Most testosterone is bound to sex hormone-binding globulin (SHBG) protein and isn’t active. If you have a low level of SHBG, you may have a high level of free testosterone in your bloodstream. Dihydrotestosterone (DHT) is made from testosterone by an enzyme. DHT is five times more potent than testosterone. DHT is primarily used by the body in the prostate, skin, and hair follicles.