Is a Testosterone, Free & Total + SHBG worth it?
What it costs, whether to test at home or at Quest, and how to read your results.
Medically reviewed by Youmna DiStefano, MD — updated August 2026
The short answer
The right first test when you want testosterone results a clinician can actually interpret in one pass. Total testosterone alone misleads whenever SHBG is high or low - which is exactly what happens with age, weight, thyroid issues, and many medications. This draw measures the total, the free (dialysis method), and the SHBG that connects them, for $15 more than free-and-total alone.
Who should order it (and who can wait)
Worth it if you...
- •Symptoms of low T (fatigue, low libido, reduced drive) - especially with a previous 'normal' total testosterone that never quite matched how you feel
- •Men 40+ - SHBG rises with age, so total T increasingly overstates what's actually available
- •Anyone considering or being evaluated for TRT who wants the complete baseline a prescriber will ask for anyway
- •Conditions and medications that move SHBG: thyroid disorders, obesity, insulin resistance, some anticonvulsants
You can probably wait if you...
- •You just want a cheap periodic screen and felt fine at your last draw - Testosterone, Total ($33.99) answers the screening question
- •You're already ON testosterone therapy - the TRT Quarterly Panel ($179) adds the safety markers (hematocrit, PSA, estradiol) that matter on treatment
- •You're investigating fertility specifically - LH/FSH and semen analysis lead that workup; testosterone testing alone won't answer it
We would rather you order the right test than the most expensive one.
At-home vs Quest vs Labcorp
The most common question we get. The short version: the lab and the result are the same - you are choosing where the blood is drawn.
Walk into a lab
Get drawn at any Quest location - thousands nationwide, often same-day. Best for speed and lowest cost.
At-home draw
Not recommended for this test - it needs a lab-based collection to be accurate.
Same result
Whichever you pick, it is run on the same CLIA-certified analyzers with the same reference ranges.
Standard venous draw at a Quest location, best before 10 AM when testosterone peaks. No fasting. $69.99 self-pay for all three measurements from one tube - assembling the same pair of tests at Quest's consumer store runs about $144.
How to read your results
The markers that matter most and what an out-of-range value can mean. Reference ranges vary by lab, age, and sex.
| Marker | Typical range | What it means |
|---|---|---|
| Total testosterone | ~300-1000 ng/dL (adult men; labs vary) | All circulating testosterone, bound and unbound. The screening number - but the one most distorted by SHBG shifts. |
| Free testosterone (equilibrium dialysis) | ~5-21 ng/dL (adult men; labs vary) | The unbound, biologically active fraction, measured by the reference method rather than estimated. Low free T with symptoms is the pattern that matters clinically even when total looks acceptable. |
| SHBG | ~10-57 nmol/L (adult men; labs vary) | The liver-made protein binding most of your testosterone. High SHBG (age, hyperthyroidism, some medications) = normal total but low free. Low SHBG (obesity, insulin resistance) = the reverse. This number explains discordant results. |
Frequently asked questions
Ready to order your Testosterone, Free & Total + SHBG?
$69.99, physician-authorized, results in 3–5 business days. No insurance or doctor's visit required.
About this guide
Reviewed August 4, 2026. This is general health information, not medical advice, diagnosis, or treatment. Reference ranges vary by laboratory, age, sex, and clinical context - always interpret results with a qualified healthcare provider. Lab analysis is performed at CLIA-certified Quest Diagnostics and Labcorp facilities.