Normal testosterone levels for women generally range between 15 and 70 nanograms per deciliter (ng/dL) or about 0.5 to 2.4 nanomoles per liter (nmol/L), with some variation depending on the laboratory and the woman's age

. More specifically:

• Premenopausal women typically have testosterone levels in the range of 15 to 70 ng/dL

• Postmenopausal women usually have lower levels, often below 33 ng/dL

• Some sources give a slightly narrower range of about 9 to 55 ng/dL for adult women, with levels declining with age

• Testosterone levels naturally decline with age in women, with about a 50% reduction by age 40 compared to younger adults

These levels reflect total testosterone in the blood, which is produced mainly by the ovaries and adrenal glands. Testosterone in women supports ovarian function, bone strength, mood, and sex drive

. Because normal ranges can vary by lab and individual factors, healthcare providers interpret results in context. Abnormal levels-either too high or too low-may indicate medical conditions such as polycystic ovary syndrome (PCOS), adrenal or ovarian tumors, or hormonal imbalances and warrant medical evaluation

. In summary, a typical normal testosterone level for a woman is approximately 15–70 ng/dL, with lower values expected after menopause