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Also reported in: nmol/L
Your free testosterone is in the normal range, meaning your body has adequate active hormone available to support energy, libido, muscle function, and mood.
Free testosterone is the fraction of testosterone that your cells can actually use. At very low levels, your body is very short of its most important androgenic hormone, affecting virtually every system.
Urgent endocrinology evaluation is needed. Testosterone replacement therapy may be required.
Free Testosterone: {{value}} {{unit}} — very low (ref: {{low}}–{{high}})Free testosterone is the portion that actually enters your cells to do work. Even if your total testosterone seems normal, low free testosterone means your body isn't getting what it needs. This may contribute to fatigue, low sex drive, reduced muscle, mood dips, and brain fog.
This result is clinically meaningful. Discuss with your doctor about whether testosterone therapy or addressing SHBG (a protein that grabs onto sex hormones) (a protein that carries sex hormones in your blood) levels is the right approach.
Free Testosterone: {{value}} {{unit}} — below reference range (ref: {{low}}–{{high}})Your free testosterone is just below the optimal range. You may notice subtle symptoms like lower energy, reduced motivation, or slower recovery from exercise.
Consider checking SHBG (a protein that grabs onto sex hormones) (a protein that carries sex hormones in your blood), total testosterone, and LH/FSH to get the full picture. Lifestyle factors (sleep, stress, weight) can meaningfully raise free testosterone.
Free Testosterone: {{value}} {{unit}} — borderline lowYour free testosterone is in the normal range, meaning your body has adequate active hormone available to support energy, libido, muscle function, and mood.
No action needed. Maintain a healthy lifestyle to sustain these levels.
Free Testosterone: {{value}} {{unit}} — within reference rangeYour free testosterone is in the optimal zone, supporting strong energy, libido, muscle building capacity, and mood stability.
Excellent result. Keep doing what you're doing — your testosterone health is strong.
Free Testosterone: {{value}} {{unit}} — optimalSlightly elevated free testosterone is usually not a problem in men, but in women it can cause symptoms like acne, facial hair, and irregular periods. It may also indicate PCOS in women.
Context matters here. In men: usually fine. In women: discuss with your doctor as it may signal hormonal imbalance.
Free Testosterone: {{value}} {{unit}} — borderline elevatedHigh free testosterone in women is associated with PCOS, adrenal tumors, or anabolic steroid use. In men, it can be caused by exogenous testosterone or adrenal tumors. High levels can cause aggression, acne, hair loss, and fertility problems.
See your doctor to investigate the cause, particularly in women where this is more clinically significant.
Free Testosterone: {{value}} {{unit}} — elevated (ref: {{low}}–{{high}})Very high free testosterone can indicate an androgen-producing tumor, anabolic steroid abuse, or a serious hormonal disorder. This level may contribute to significant health risks including cardiovascular damage, liver stress, and fertility destruction.
Urgent endocrinology evaluation is needed. This level requires immediate investigation.
Free Testosterone: {{value}} {{unit}} — very high (ref: {{low}}–{{high}})Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.