Free Testosterone Test: Normal Range and Signs of Low Levels
Order Testosterone Free & Total Testing | Low TQuick Answer
Free testosterone is the small share of testosterone your tissues can actually use. This guide explains normal ranges, symptoms of imbalance, and how to order testing directly.
Key Takeaways
- Free testosterone is the small unbound fraction of testosterone available to tissues.
- Only about 1 to 3 percent of testosterone circulates unbound in the blood.
- Typical free testosterone ranges are about 50 to 210 pg/mL in men.
- Typical free testosterone ranges are about 1 to 8 pg/mL in women.
- Morning collection before about 10 a.m. is preferred because testosterone peaks early.
- A direct-access free testosterone test commonly costs about $60 to $120.
What Is a Free Testosterone Test?
A free testosterone test measures the small fraction of testosterone circulating unbound in the blood. Most testosterone rides on carrier proteins, mainly sex hormone-binding globulin (SHBG) and albumin, and only about 1 to 3 percent floats free. That free fraction is the portion readily available to tissues, which is why it often tracks symptoms better than the total number alone.
Labs offer several related measurements: total testosterone (all testosterone, bound and free), free testosterone measured directly by assay, and calculated free testosterone derived from total testosterone, SHBG, and albumin. When SHBG is normal, total and free usually agree. When SHBG is altered by aging, obesity, thyroid disease, liver disease, or certain medicines, free testosterone gives the clearer picture. This guide is educational information, not medical advice.
When to Test Free Testosterone
Testing is commonly ordered for symptoms and situations such as:
- In men: low libido, erectile difficulty, fatigue, loss of muscle, increased body fat, or low mood
- In women: irregular periods, excess facial or body hair, acne, or thinning scalp hair
- Infertility evaluation in either sex
- Monitoring known low testosterone or treatment response
- When total testosterone is borderline but symptoms persist
- Conditions that alter SHBG, such as thyroid disorders, obesity, diabetes, or liver disease
Because testosterone follows a daily rhythm, morning collection before about 10 a.m. is preferred. An afternoon result can look falsely low, so timing is part of getting an accurate answer.
Typical Normal Ranges
Ranges vary by laboratory, assay, age, and sex. Typical adult ranges used by many labs are:
| Test | Typical adult range |
|---|---|
| Total testosterone, men | About 300 to 1,000 ng/dL |
| Free testosterone, men | About 50 to 210 pg/mL |
| Total testosterone, women | About 15 to 70 ng/dL |
| Free testosterone, women | About 1 to 8 pg/mL |
Levels decline gradually with age in men, roughly 1 percent per year after the thirties, and vary across the menstrual cycle and with contraceptive use in women. Direct assay and calculated free testosterone use different methods with different cutoffs, so compare repeat results from the same lab and method. Always read your number against your own report range.
What Low or High Results Mean
Low free testosterone in men, especially with symptoms, is often described as hypogonadism. When LH and FSH are high alongside it, the cause may lie in the testes; when they are low or inappropriately normal, pituitary signaling, obesity, sleep apnea, diabetes, or medications such as opioids or steroids may be involved. Low testosterone in women is harder to define, since female ranges are narrow and symptoms overlap with many conditions, so results need careful clinical correlation.
High free testosterone in women commonly accompanies PCOS or other androgen-excess conditions and may bring acne, excess hair growth, and irregular cycles. High levels in men most often reflect testosterone therapy or supplements, since natural overproduction is uncommon. No single result diagnoses a condition, and treatment decisions require a clinician who can weigh symptoms, repeat labs, and related hormones such as LH, prolactin, and estradiol.
How to Order a Free Testosterone Test
A clinician can order free and total testosterone with SHBG, LH, and prolactin as part of a hormone workup. Through direct-access lab testing, you can order the same tests yourself: pick free testosterone alone, a free-plus-total combination, or a male or female hormone panel, pay online, and visit a local collection site. No physician order or insurance is needed.
Book a morning draw, ideally before 10 a.m., and list all medicines and supplements, including testosterone products, hair-loss treatments, and hormonal contraceptives, since these strongly affect results. Avoid heavy exercise the morning of the draw if you can. Results usually post within one to two business days, and any abnormal result should go to your clinician before you consider treatment changes.
How Much Does Free Testosterone Testing Cost?
Direct-access pricing commonly runs about $50 to $100 for total testosterone alone, about $60 to $120 for a free testosterone test, and about $100 to $180 for a free-plus-total combination with SHBG. Broader male or female hormone panels that add LH, FSH, estradiol, prolactin, or PSA typically range from about $180 to $400.
Insurance-billed testing through a clinician depends on your plan and whether the diagnosis code is covered. When comparing direct-access options, check that the collection fee is included, confirm morning appointment availability, and prefer labs that report the assay method so repeat tests stay comparable.
Frequently Asked Questions
What is the difference between free and total testosterone?
Free testosterone is the small unbound fraction available to tissues, while total includes hormone bound to SHBG and albumin. Free is often more informative when SHBG is altered by age, weight, thyroid, or liver conditions.
What time of day should testosterone be tested?
Morning collection, usually before 10 a.m., is preferred because testosterone peaks early and falls through the day. A low morning result is more meaningful than an afternoon one.
Can other health conditions lower testosterone?
Yes. Obesity, type 2 diabetes, sleep apnea, thyroid disorders, and pituitary conditions can all lower testosterone. That is why total, free, LH, and prolactin are often checked together.
Is testosterone therapy risky?
Testosterone therapy can raise red blood cell counts, affect fertility, and influence prostate markers, so it requires clinician supervision with follow-up labs. Never start or adjust hormones based on a direct-access result alone.
Can I order a free testosterone test without a doctor?
Yes. Direct-access lab testing lets you order free and total testosterone online, with or without SHBG and LH, and visit a local collection site without a physician order.
Where to Get This Test
Related Guides
Sources
This guide is reviewed for sourcing accuracy against the references listed above. It is educational information, not medical advice. Always consult a qualified healthcare provider about your own results and care.
Ready to get tested? Order online through our partner and visit a local lab near you. No doctor's order or insurance required.
Order Testosterone Free & Total Testing | Low TReviewed by the LabAppointments Editorial Team
Our team researches and fact-checks all content to ensure accuracy. We update guides regularly to reflect current testing options, pricing, and laboratory accreditation standards.