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Also reported in: pg/mL, nmol/L
Your free testosterone is within the reference range, indicating adequate biologically active hormone is available to your cells.
Free testosterone is the biologically active fraction that enters cells directly. At this very low level, even if total testosterone appears marginal, cells are receiving virtually no testosterone signal. All testosterone-dependent functions are very impaired.
Seek urgent medical evaluation including SHBG (a protein that grabs onto sex hormones) (a protein that carries sex hormones in your blood), LH, FSH, and pituitary assessment. This may indicate primary hypogonadism or noticeable SHBG (a protein that grabs onto sex hormones) elevation blocking available testosterone.
Free Testosterone: {{value}} {{unit}} — very low (ref: {{low}}–{{high}})Low free testosterone means insufficient active hormone is reaching your cells, even if total testosterone looks acceptable. Elevated SHBG (a protein that grabs onto sex hormones) (which binds and inactivates testosterone) is a common cause. All testosterone-dependent functions are compromised.
Check SHBG (a protein that grabs onto sex hormones) (a protein that carries sex hormones in your blood). High SHBG (a protein that grabs onto sex hormones) can be reduced through dietary changes (reducing soy, increasing zinc, resistance training, intermittent fasting). See your doctor for comprehensive hormonal evaluation.
Free Testosterone: {{value}} {{unit}} — below reference range (ref: {{low}}–{{high}})Borderline low free testosterone can cause subtle symptoms especially when SHBG (a protein that grabs onto sex hormones) (a protein that carries sex hormones in your blood) is high and total testosterone appears deceptively normal. Free testosterone is often a more relevant clinical measure than total testosterone.
Check SHBG (a protein that grabs onto sex hormones) (a protein that carries sex hormones in your blood) alongside this result. Resistance training and optimizing sleep are the most effective lifestyle interventions to improve free testosterone.
Free Testosterone: {{value}} {{unit}} — borderline lowYour free testosterone is within the reference range, indicating adequate biologically active hormone is available to your cells.
No action needed. Continue good lifestyle habits supporting hormonal health.
Free Testosterone: {{value}} {{unit}} — within reference rangeYour free testosterone is in the healthy midrange, providing excellent cellular hormone access for energy, muscle function, mood, and libido.
Excellent result. Keep up regular exercise, quality sleep, and a balanced diet.
Free Testosterone: {{value}} {{unit}} — optimalSlightly elevated free testosterone is generally favorable in men. In women, it can cause acne, oily skin, or excess hair growth.
For men: generally beneficial. For women with symptoms: discuss with your doctor and investigate PCOS.
Free Testosterone: {{value}} {{unit}} — borderline highHigh free testosterone in men often reflects TRT overdose or exogenous androgen use. In women, it suggests PCOS, adrenal hyperplasia, or an androgen-secreting tumor.
See your doctor. In women: comprehensive gynecological and endocrine evaluation. In men: review androgen therapy dosing.
Free Testosterone: {{value}} {{unit}} — above reference range (ref: {{low}}–{{high}})Very high free testosterone suggests an androgen-secreting tumor, noticeable anabolic steroid misuse, or significant exogenous testosterone overdose. Serious cardiovascular and metabolic consequences follow.
Seek urgent medical evaluation. Stop any exogenous male-type hormones (androgens). Imaging for androgen-secreting tumors is needed.
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.