What is the difference between total testosterone and free testosterone?

Total testosterone (CPT 84403) measures all testosterone in your blood, both bound to proteins and unbound. Free testosterone measures only the unbound (active) portion. Standard diagnostic guidelines (AUA) only require total testosterone for initial evaluation. Free testosterone may be ordered if total testosterone is borderline or if conditions affecting binding proteins are suspected.

CPT (Current Procedural Terminology) codes are five-digit numbers that describe every medical service or procedure. Your doctor, hospital, and insurance company use them to communicate exactly what was done. Every line on your medical bill has a CPT code, and knowing the code lets you look up what Medicare pays for that same service.

Why do providers charge so much more than Medicare pays?

Providers set their own "chargemaster" prices, which are essentially list prices. Medicare pays a fixed rate based on the resources each service actually requires (the RVU system for procedures, or the Clinical Lab Fee Schedule for lab tests). Commercial insurers typically pay 150% to 250% of Medicare rates. Uninsured patients are often billed the full chargemaster price, which can be 2x to 30x what Medicare pays.

Can I use Medicare rates to negotiate my bill?

Yes. Medicare rates are the closest thing to a "fair price" benchmark in U.S. healthcare. When negotiating, ask the provider what they accept from Medicare for the same CPT code. Most providers will accept 150% to 200% of Medicare for cash-pay patients, which is still far less than their chargemaster price. Many hospital financial assistance policies also use a multiple of Medicare as their discount floor.

How are Medicare rates calculated?

For most procedures, Medicare uses the Resource-Based Relative Value Scale (RBRVS). Each CPT code gets three RVU components: Work (physician time and skill), Practice Expense (overhead), and Malpractice. These are multiplied by geographic adjustment factors (GPCIs) and a conversion factor ($33.4009 in 2026). Lab tests (80000-89999 range) use a separate Clinical Laboratory Fee Schedule with flat national rates.

CPT 84403

Testosterone, Total Blood Test

CPT 84403 measures total testosterone levels in the blood. Testosterone testing has surged due to aggressive "Low T" marketing from hormone clinics. Medicare pays approximately $20 to $30 for this test under the Clinical Laboratory Fee Schedule, but providers charge an average of $140.62 (roughly a 5x to 7x markup). Direct-to-consumer labs offer the same test for $30 to $50.

Updated May 2026Source: CMS Clinical Lab Fee Schedule

CPT 84403 at a Glance

Medicare CLFS rate: ~$20 to $30
Average provider charge: $140.62
Markup: 5x to 7x over Medicare rate
Direct-to-consumer price: $30 to $50

Test type: Single hormone level
Beneficiaries (2023): 766,023
Fee schedule: Clinical Laboratory (CLFS)
Rate type: National (no geographic adjustment)

How Lab Pricing Works (Clinical Laboratory Fee Schedule)

Like all lab tests, CPT 84403 is priced under the Medicare Clinical Laboratory Fee Schedule (CLFS). The CLFS sets a single national rate for each lab test with no geographic adjustments. The same testosterone test costs Medicare the same amount in every state. Provider charges, however, vary widely and average $140.62 nationally.

Metric	Value
Medicare CLFS Rate	~$20 to $30
Average Provider Charge	$140.62
Markup Ratio	5x to 7x
Pricing Method	National rate (CLFS), no geographic variation

Critical timing tip: Total testosterone should be drawn in the MORNING (before 10 AM) because levels drop 20 to 30% throughout the day. An afternoon test can show artificially low levels, potentially leading to an unnecessary "Low T" diagnosis and treatment. If your result was borderline low and drawn in the afternoon, ask for a repeat morning draw before starting therapy.

Lab tests are priced under the Clinical Laboratory Fee Schedule, not the Physician Fee Schedule. Medicare lab rates are set nationally and do not vary by geographic location.

What Does a Total Testosterone Test Measure?

Total testosterone (CPT 84403) measures the combined amount of testosterone in your blood, including testosterone bound to proteins (SHBG and albumin) and the small percentage circulating freely. It is the standard first-line test for evaluating testosterone levels in men.

Common Reasons for Testing

Symptoms of low testosterone (fatigue, low libido, muscle loss)
Infertility evaluation in men
Puberty evaluation in adolescents
Monitoring testosterone replacement therapy
Polycystic ovary syndrome (PCOS) evaluation in women

What Guidelines Actually Require

AUA guidelines: total testosterone on two separate morning draws
Draw must be before 10 AM (fasting preferred)
Two confirmed low results required before diagnosis
Free testosterone only if total T is borderline
Extensive hormone panels are NOT required initially

Normal ranges for total testosterone in adult males are generally 300 to 1000 ng/dL, though labs vary slightly. Results should be interpreted in the context of symptoms, age, and the time of day the sample was drawn.

Where to Get a Testosterone Test for Less

A total testosterone test does not require hospital equipment. Any basic lab can run it. Here are your options ranked by price:

Direct-to-Consumer Labs: $30 to $50

Services like Quest Diagnostics, LabCorp patient service centers, Ulta Lab Tests, and Walk-In Lab offer total testosterone testing without a doctor's order in most states. You pay online, visit a nearby lab for the blood draw (morning appointment recommended), and get results electronically.

Independent Labs (with doctor's order): $30 to $60

If your doctor orders the test, request the order be sent to an independent lab rather than a hospital lab. Independent labs typically charge 50% to 80% less than hospital outpatient labs.

Hospital Outpatient Labs: $100 to $200+

Hospital labs are the most expensive option. The $140.62 national average reflects these inflated charges. If your doctor is part of a hospital system, the order may automatically route to the hospital lab. Ask specifically for an independent lab.

Testosterone/Hormone Clinics: $200 to $500+

Many "Low T" clinics order extensive panels (total T, free T, SHBG, estradiol, DHEA, PSA, and more) that can total $500 or more at provider charges. Standard AUA guidelines only require total testosterone confirmed on two separate morning draws for diagnosis. Be cautious of clinics that order far more tests than guidelines recommend.

What Insured Patients Actually Pay for a Testosterone Test

Insurance companies negotiate lab rates that are typically close to or slightly above the Medicare CLFS rate. What you owe depends on your plan structure:

Your Situation	What You Likely Pay	How It Works
Copay plan (deductible met or N/A)	$0 to $15	Many plans cover lab work at 100% after deductible
Coinsurance plan (deductible met)	$4 to $10	20% of negotiated rate ($20 to $50)
High-deductible plan (deductible NOT met)	$20 to $50	Full negotiated rate applied to your deductible
Medicare Part B	$0	Medicare covers clinical lab tests at 100% (no coinsurance)

Common Billing Problems with CPT 84403

Unnecessary panel upselling at testosterone clinics

Many hormone clinics order 6 to 10 hormone tests on the first visit when guidelines only call for total testosterone. This can generate $500+ in lab charges. If a clinic orders total T, free T, SHBG, estradiol, DHEA-S, PSA, LH, FSH, and prolactin on your first visit, ask which tests are clinically indicated versus "standard protocol." Most are not needed for an initial screening.

Afternoon draw leading to repeat (and double) testing

If your testosterone was drawn in the afternoon and came back borderline low, the correct next step is a morning redraw. But some clinics skip this and immediately prescribe treatment based on a single afternoon value. If you later get a confirmatory morning draw, you have now paid for two tests when proper timing would have required only one.

Duplicate charges: total testosterone plus free testosterone

CPT 84403 (total testosterone) and CPT 84402 (free testosterone) are separate tests. Some providers order both routinely, but guidelines recommend starting with total testosterone only. Free testosterone should only be added if total testosterone is borderline or if conditions affecting binding proteins (like obesity or liver disease) are suspected. If both appear on your bill, ask whether free testosterone was medically necessary.

Frequently Asked Questions

How much does a total testosterone test cost without insurance?

Without insurance, a total testosterone test (CPT 84403) costs $80 to $200 at hospitals and clinics, with the national average charge at $140.62. Direct-to-consumer labs offer the same test for $30 to $50 without a doctor's order in most states. Medicare pays approximately $20 to $30.

Why should testosterone be drawn in the morning?

Testosterone levels are highest in the early morning and naturally decline 20 to 30% by the afternoon. A test drawn after noon can show falsely low results. The American Urological Association (AUA) requires that testosterone be measured before 10 AM, with two separate low results on two different days, before diagnosing hypogonadism.

Do I need a full hormone panel to check testosterone?

No. Standard guidelines (AUA) only require total testosterone as the initial test. Additional tests like free testosterone, SHBG, LH, FSH, or estradiol may be appropriate in specific situations, but a full panel is not needed for initial screening. Be cautious of clinics that order $500+ in labs on the first visit.

Can I order a testosterone test without a doctor?

In most states, yes. Direct-to-consumer lab services allow you to order a testosterone test online without a physician's order. You book a morning appointment at a nearby lab location, get your blood drawn, and receive results electronically. A few states (New York, New Jersey, Rhode Island) restrict direct-to-consumer lab ordering.

Need Help Lowering a Medical Bill?

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