Testosterone Test: What Your Total and Free Levels Mean

What Is a Testosterone Test?

A testosterone test measures the amount of testosterone in your blood. Most testosterone circulates bound to proteins, mainly sex hormone binding globulin (SHBG) and albumin. Only a small fraction, called free testosterone, is unbound and readily available to tissues. Labs can report total testosterone, free testosterone, or both.

Testing is done with a standard blood draw, usually in the morning when levels peak in men. Both men and women can be tested, since testosterone matters for bone, muscle, mood, and sexual health in everyone. This is educational information, not medical advice.

Why a Testosterone Test Is Ordered

• Low libido, erectile difficulty, or infertility in men
• Fatigue, low mood, or loss of muscle mass
• Irregular periods, excess hair growth, or acne in women
• Delayed or early puberty in adolescents
• Monitoring testosterone replacement therapy

Testosterone is often ordered with LH, FSH, estradiol, prolactin, and SHBG to find where a hormone problem starts. A morning sample gives the most reliable baseline in men.

Normal Testosterone Range

Reference ranges vary by laboratory, assay, and age. Typical adult ranges are:

Levels fall gradually with age in men and vary across the menstrual cycle in women. Always read your result against your own lab reference range.

What Low Testosterone Means

In men, persistently low morning testosterone with symptoms may indicate hypogonadism. Causes include aging, obesity, sleep apnea, pituitary disorders, testicular injury, certain medications such as opioids, and chronic illness. Symptoms can include fatigue, low libido, erectile difficulty, depressed mood, and reduced muscle.

In women, low testosterone is less clearly defined but can follow ovarian or adrenal problems. Because symptoms overlap with thyroid disease, depression, and sleep disorders, testosterone is only one piece of the workup.

What High Testosterone Means

High testosterone in women may point to polycystic ovary syndrome, adrenal conditions, or androgen-secreting tumors, and can cause acne, scalp thinning, and excess hair growth. In men, high results most often reflect testosterone therapy, supplements, or anabolic steroids rather than natural overproduction.

Very high levels with suppressed LH and FSH suggest an outside source of androgen. Athletes should note that testing positive for undisclosed androgens can carry sporting penalties.

How to Order a Testosterone Test and Where to Get Tested

You can get tested through a clinician or through direct-access lab testing, where you order online and visit a local collection site. For men, schedule a morning draw, ideally before 10 a.m., and avoid heavy alcohol or severe sleep loss the night before, since both can lower the result.

Ask whether your order includes total testosterone only or free testosterone as well. A panel that adds SHBG, LH, FSH, and estradiol gives a far clearer picture than total testosterone alone.

How Much Does a Testosterone Test Cost?

Direct-access total testosterone testing commonly costs between about $50 and $100. Tests that add free testosterone or SHBG usually run about $80 to $150, and full male or female hormone panels cost more but cover several markers in one draw.

Many people pay out of pocket to avoid an office visit, and collection fees may or may not be included in the quoted price. Check what is bundled before you order so there are no surprises.

Factors That Can Shift Testosterone Results

Testosterone moves around more than most people expect. Poor sleep, heavy alcohol use, acute illness, very low calorie diets, and intense overtraining can all lower a morning result temporarily. Opioids, steroids, and some prostate drugs suppress production, while biotin supplements can interfere with the assay itself.

Obesity lowers total testosterone partly by lowering SHBG, which is why free testosterone or SHBG testing adds context. For the most reliable baseline, test in the morning after a normal night of sleep, avoid heavy drinking the day before, and recheck an unexpected low before drawing conclusions.

Testosterone Testing in Women

Women produce testosterone in the ovaries and adrenal glands, and testing follows different reference ranges. Excess androgen in women is usually evaluated with total and free testosterone plus DHEA sulfate, and results are read against the menstrual cycle phase. Testing is commonly timed early in the cycle unless the clinician directs otherwise.