Testosterone (Bioavailable)

High values may indicate

High bioavailable testosterone may indicate androgen excess conditions such as polycystic ovary syndrome (PCOS) in women, anabolic steroid use, adrenal or gonadal tumors, or low SHBG states.

Low values may indicate

Low bioavailable testosterone may indicate hypogonadism, aging-related decline, pituitary disorders, or conditions that increase SHBG, and can cause fatigue, low libido, and reduced muscle mass.

Frequently asked questions

What is a normal Testosterone (Bioavailable) level?

A typical reference range for Testosterone (Bioavailable) is 110–575 ng/dL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.

What units is Testosterone (Bioavailable) measured in?

Testosterone (Bioavailable) is most commonly reported in ng/dL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.

Where do Testosterone (Bioavailable) reference ranges come from?

BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.

Can I track Testosterone (Bioavailable) over time?

Yes. Upload results from any lab and BloodId charts your Testosterone (Bioavailable) over time against its reference range, so you can see whether the trend is rising, falling, or stable.

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• ACTH
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• Angiotensin I
• Angiotensin II
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