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Testosterone, Free, Calculated Unit Converter

Convert between pmol/L, pg/mL, ng/dL, nmol/L

Also known as: Calculated Free Testosterone, cFT, Free T Calc, Vermeulen Free Testosterone

Convert Testosterone, Free, Calculated

What is Testosterone, Free, Calculated?

Free testosterone is the small portion of testosterone in your blood that isn't bound to proteins (mainly SHBG and albumin).

While only ~1–3% circulates as free hormone, testosterone bound loosely to albumin can easily dissociate and also becomes available for tissue uptake.

Together, these forms represent the biologically active fraction of testosterone.

Where Does Testosterone, Free, Calculated Come From?

Produced mainly in the testes (men), ovaries (women), and in smaller amounts by the adrenal glands.

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