Total Testosterone
Testosterone is the main male sex hormone. Women produce smaller amounts. It affects muscle mass, libido, and mood.
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Normal ranges
Men: 8.5–28 nmol/L. Women: 0.5–2.5 nmol/L.
Units: nmol/L
Causes of deviations
Low levels:
Hypogonadism, aging, obesity, chronic disease.
High levels:
Tumors, PCOS in women, anabolic steroid use.
When to see a doctor
If you have deficiency symptoms (low libido, fatigue) or elevated levels.
Related biomarkers
Panels
Hormone panel
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