Free (unbound) testosterone only — the biologically active fraction — without a total testosterone measurement. Useful when total testosterone is already known or tracked separately.
Free testosterone represents the small fraction of testosterone that's unbound and available for your cells to use—the biologically active form. This measurement is useful when total testosterone is already known, or when symptoms suggest hormone imbalance despite normal total levels.
When elevated: Elevated free testosterone may indicate androgen excess, which in women can present as hirsutism, acne, or irregular periods, and in men may reflect testicular overproduction or exogenous hormone use. In both sexes, persistently high levels warrant investigation for polycystic ovary syndrome, adrenal disorders, or hormone-secreting tumors. When low: Low free testosterone in men is associated with reduced energy, sexual function, and muscle mass, and may signal hypogonadism or pituitary/testicular dysfunction. In women, low levels are less commonly pathologic but may occur with severe illness, malnutrition, or excessive SHBG elevation.
Athletes track free testosterone because it correlates with muscle recovery, strength gains, and training adaptation. Chronically elevated training stress, poor sleep, or overtraining can suppress free testosterone; monitoring it helps assess whether recovery is adequate and whether hormonal status supports performance goals.
Turnaround Time
8 days (up to 12 days)
Order online
Choose your lab and check out. We send your lab requisition automatically — no doctor visit needed.
Get your sample collected
Visit a lab service center near you for a quick blood draw (or book at-home phlebotomy where available).
See your results
Your results land in your Insider portal, ready to review and act on — that easy.
Your price
$19.90$150
7.5× less than retail
Versus the typical direct-to-consumer retail price for this test (illustrative — consumer prices vary by provider and region).
$19.90
Peer-reviewed sources supporting the educational content on this page.
Free (unbound) testosterone only — the biologically active fraction — without a total testosterone measurement. Useful when total testosterone is already known or tracked separately.
Free testosterone represents the small fraction of testosterone that's unbound and available for your cells to use—the biologically active form. This measurement is useful when total testosterone is already known, or when symptoms suggest hormone imbalance despite normal total levels.
When elevated: Elevated free testosterone may indicate androgen excess, which in women can present as hirsutism, acne, or irregular periods, and in men may reflect testicular overproduction or exogenous hormone use.
The Testosterone, Free test starts at $19.90 at Quest. No doctor's visit and no insurance needed; we do not bill insurance. Fitomics Insider members pay from $17.90.
Results for the Testosterone, Free test are typically ready about 8 days after your draw, and up to 12 days for some samples. Your results land in your Insider portal.
No. When you order the Testosterone, Free test from Fitomics Research Labs, a licensed physician in our 50-state network reviews and signs your requisition after checkout, and it lands in your portal and inbox. Then visit any Labcorp, Quest, or BioReference patient service center for your draw; results post to your Insider portal.
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