Testosterone, Free, Bioavailable and Total, MS Blood Test

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Feature	Labcorp	Quest Diagnostics
Price	Coming soon	$36.49
Results in	—	~5 business days
Sample type	—	Blood Serum
Require fasting	—	No

About the test

This test is crucial for evaluating testicular function in males and for managing conditions like hirsutism and virilization in females. It measures the levels of free, bioavailable, and total testosterone in the body, providing comprehensive insights into an individual's hormonal balance.

Who should consider this test?

This test is particularly useful for individuals experiencing symptoms related to hormonal imbalances such as:

Low sex drive
Erectile dysfunction in males
Excessive hair growth in females
Menstrual irregularities in females
Decreased muscle mass
Mood changes

Included biomarkers & Reference ranges

Biomarker	Reference range
Albumin The main protein made by your liver, which helps balance fluids and carries hormones, vitamins, and medications through your blood. Low levels can point to liver, kidney, or nutrition issues.	3.6–5.1 g/dL
Bioavailable Testosterone The portion of your testosterone that's either free or loosely bound to albumin — the amount actually usable by your body's tissues.	—
Free Testosterone The small portion of your testosterone that's unbound and biologically active, considered a more accurate reflection of usable hormone than total testosterone.	—
Sex Hormone-Binding Globulin (SHBG) A protein that binds and transports testosterone and estrogen in your blood, determining how much hormone is 'free' and active. Important for interpreting sex hormone results.	M 10–50 nmol/L F 17–124 nmol/L
Testosterone The primary male sex hormone, also present in women in smaller amounts. Evaluated for low testosterone symptoms, fertility, and reproductive hormone imbalances.	M 250–1100 ng/dL F 2–45 ng/dL

Reference ranges vary by lab, age, and sex (M/F). Your report shows your exact range. Click any biomarker to see its optimal range and what your results mean.

How it works

1. Order online No referral or insurance
2. Get a requisition By email in 24–72 hours
3. Visit a draw center Bring a matching photo ID
4. Get results Securely by email

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Consultations

Not sure how to read your results? We can help.

Schedule a consultation with a Hormunity specialist. We’ll walk through every marker, interpret what it means for you, and map out the next steps for your care.

Book a specialist