Total testosterone measures the overall amount of testosterone in your blood, including both bound and free forms. It is the primary male sex hormone but is also important for women's health.
Category: Hormones
Also known as: testosterone, total testosterone, testosterone total, testo
Reference range: 270–1070 ng/dL (Source: ABIM)
Standard unit: ng/dL
High values may indicate
High testosterone levels in men may indicate anabolic steroid use or testosterone-producing tumors. In women, high levels may indicate polycystic ovary syndrome (PCOS), congenital adrenal hyperplasia, or ovarian tumors.
Low values may indicate
Low testosterone in men (hypogonadism) may cause fatigue, low libido, erectile dysfunction, decreased muscle mass, and depression. In women, low levels may contribute to decreased libido and fatigue.