The only way to confirm high testosterone is a blood test, but your body often gives clear signals before you ever see a lab result. Recognizing those signals depends partly on whether you’re male or female, since the symptoms show up differently. For adult men, normal testosterone falls between 193 and 824 ng/dL. For adult women, normal is below 40 ng/dL.
Signs of High Testosterone in Men
Most of what we know about elevated testosterone in men comes from those using anabolic steroids or testosterone supplements, since naturally occurring excess is relatively uncommon. The physical and behavioral changes linked to high levels include persistent acne, rapid increases in muscle mass, mood swings, euphoria followed by irritability, impaired judgment, and in some cases delusions. Aggression is often cited as a hallmark sign, though the link between testosterone and aggressive behavior is less clear-cut than popular culture suggests.
Because men produce testosterone in large quantities to begin with, a modest elevation above the normal range can be harder to spot through symptoms alone. The changes tend to be more obvious when levels are dramatically elevated, as with steroid use.
Signs of High Testosterone in Women
Women are more likely to notice physical changes from excess testosterone because even small increases can push levels well above the normal ceiling of 40 ng/dL. Common signs include acne, oily skin, and new hair growth in typically male patterns on the face, chin, and abdomen. Doctors call this hirsutism and score its severity using a standardized scale that rates hair growth across multiple body areas. A score of 8 or higher (out of 36) confirms clinical hirsutism. Terminal hair on the chin or lower abdomen alone is nearly 100% sensitive at predicting excess body hair overall.
Other changes that develop over time include irregular or absent periods, a decrease in breast size, shifts in body shape toward a more angular frame, thinning hair along the front of the scalp, a deepening voice, increased muscle mass, and in more pronounced cases, enlargement of the clitoris. Many of these overlap with the classic presentation of polycystic ovary syndrome (PCOS), which is the most common cause of high testosterone in women. PCOS is typically diagnosed when a woman has some combination of excess androgen signs, irregular cycles, and characteristic ovarian changes on ultrasound.
How Testosterone Is Tested
A simple blood draw is the standard diagnostic tool. There are three types of testosterone tests:
- Total testosterone measures both the testosterone bound to proteins in your blood and the small amount floating freely. This is the most common test and usually the first one ordered.
- Free testosterone measures only the unbound portion. Free testosterone is more readily available for your body to use, so this test can sometimes catch problems that a total test misses.
- Bioavailable testosterone measures free testosterone plus testosterone loosely bound to a protein called albumin. This is the least common test but can help clarify borderline results.
Timing matters. Testosterone fluctuates throughout the day, and lab reference ranges are built around blood drawn between 7 a.m. and 10 a.m., when levels are typically at their peak. Getting tested outside that window can skew your results and lead to a misleading reading. Normal ranges also vary somewhat between laboratories, so your provider will interpret your numbers against the specific reference range used by the lab that processed your sample.
Why Levels Might Be Elevated
In women, the most frequent culprit is PCOS, a hormonal condition affecting an estimated 6 to 12% of women of reproductive age. The ovaries overproduce androgens (the family of hormones that includes testosterone), driving many of the symptoms described above. Less commonly, tumors on the ovaries or adrenal glands can push testosterone production much higher.
In men, naturally elevated testosterone without an external cause is rare. The more typical scenario involves exogenous sources: testosterone replacement therapy, anabolic steroids, or over-the-counter supplements that boost hormone production. When a provider suspects outside use, one distinguishing clue is that exogenous testosterone suppresses the brain’s signals to the testes, causing other related hormones to drop. Another method compares the ratio of testosterone to a nearly identical compound the body makes naturally. A ratio above 6:1 suggests the testosterone came from an external source.
Long-Term Health Risks
Chronically high testosterone is not just a cosmetic or mood issue. Research from the University of Cambridge found that genetically higher testosterone levels in men were linked to a 17% increased risk of coronary artery disease, the type of heart disease that leads to heart attacks and heart failure. In practical terms, that shifts the average lifetime risk of coronary artery disease from roughly 7.3% to 8.5%. The increased risk appears to be driven in part by testosterone’s effect on blood pressure.
For women, prolonged androgen excess can compound over time, contributing to metabolic changes, insulin resistance, and cardiovascular strain, particularly when tied to an underlying condition like PCOS that goes unmanaged. In both sexes, persistent acne, hair loss, and mood instability can take a meaningful toll on quality of life even when the more serious medical risks haven’t materialized yet.
What to Do if You Suspect High Testosterone
If you’re noticing a cluster of the symptoms above, the next step is straightforward: request a morning blood test for total testosterone. If you’re a woman experiencing new facial hair growth, acne, and irregular periods, your provider will likely also check related hormones to evaluate for PCOS or adrenal issues. If you’re a man and not taking any testosterone-boosting supplements or steroids, a high reading will typically prompt further investigation into less common causes like adrenal or testicular abnormalities.
Keep in mind that a single elevated result doesn’t always tell the full story. Stress, sleep, illness, and certain medications can temporarily shift levels. Most providers will want at least two separate morning blood draws before drawing firm conclusions or starting treatment.