On This Page – Quick Medical Summary
A TSH test measures a single hormone, yet the price swings from under $20 to well over $100. The difference is almost entirely about who gets billed.
Already holding a result? What your TSH number means at your age will serve you better than a price page. Everything below is about the bill.
ℹ️ Medical Disclaimer: This article explains lab pricing, insurance billing, and coverage rules. It does not diagnose thyroid disease, interpret your results, recommend which tests to order, or advise on medication. Decisions about thyroid testing and treatment belong with a board-certified primary care physician or endocrinologist who knows your history. Insurance and pricing questions belong with your plan and the lab billing office.
How much a TSH test costs without insurance
Without insurance, the price depends on which door you walk through.
The federal benchmark: CPT 84443
Every TSH test bills under one diagnostic code, CPT 84443. Medicare pays a single national rate for it under the fee schedule that sets Medicare lab rates, with no geographic adjustment.
📊 Clinical Data Point: Medicare’s national rate for CPT 84443 was $16.80 on the 2025–26 Clinical Laboratory Fee Schedule — Source: CMS Clinical Laboratory Fee Schedule.
That is not what you will be charged. It is the number to judge every quote against.
Buying the test yourself
Labcorp OnDemand lists its TSH test at $49. Quest lists the same test at $49 plus a $6 physician service fee.
Why hospital prices run higher
Hospital outpatient labs bill from a chargemaster, and the posted cash price for this code commonly runs several times the Medicare rate. Section 6 shows how to look up yours instead of guessing.
Will insurance cover your TSH test?
Most plans cover a TSH ordered to investigate symptoms or monitor a known condition. A TSH ordered as routine screening is a different claim.
Diagnostic vs screening
The diagnosis code your clinician attaches decides how the claim is judged. Hypothyroidism symptoms or an existing thyroid diagnosis make the test diagnostic; a wellness visit with no complaints may not.
Why routine screening isn’t automatically free
The U.S. Preventive Services Task Force concluded that evidence is insufficient to weigh the benefits and harms of screening nonpregnant, asymptomatic adults for thyroid dysfunction — an I statement, not an A or B grade. Only A and B services must be covered without cost sharing under the ACA’s list of preventive services covered at no cost. Thyroid screening is not on it.
What Medicare covers
Medicare’s own coverage page states that Part B covers medically necessary diagnostic laboratory tests and that beneficiaries usually pay nothing.
✅ Patient Action: Before the draw, ask your primary care physician or endocrinologist: “What diagnosis code will this TSH be billed under?” That single answer predicts your bill better than anything your insurer can tell you in advance. Who guidelines actually recommend testing explains where you fall.
TSH alone, or a full thyroid panel?
TSH is usually ordered by itself first, and there is a mechanical reason for that.
How reflex testing works
🔬 How It Works: TSH comes from the pituitary gland and rises or falls in response to thyroid hormone. If that first result is abnormal, the lab can run free T4 on the blood already in the tube — Quest performs this reflex at no additional cost — so a normal TSH usually ends the workup without a second draw.
What the add-ons cost
A TSH-plus-free-T4 panel is $89 at Labcorp OnDemand. A five-marker panel including free T3 and antibodies runs $149 at Quest and $247 at Labcorp OnDemand.
What to ask before the draw
Ordering more markers up front is sometimes clinically right, particularly when autoimmune disease is suspected. What free T4 and antibody tests add covers what each one answers.
✅ Patient Action: Ask your endocrinologist or primary care physician: “Is TSH alone enough here, or is there a specific reason you’re adding T3, T4, or antibodies?” Never decline a panel your clinician ordered purely on price.
Where to get a TSH test, and what each route costs
Three routes exist, and each costs you something beyond money.
| Route | Price | What you give up | Best for |
|---|---|---|---|
| Independent lab, doctor’s order | Plan rate or cash price | Nothing — bills insurance normally | Most insured patients |
| Hospital outpatient lab | Posted cash price, usually highest | Money, for an identical result | Patients already in that system |
| Buy it yourself online | $49–$55 | Insurance billing entirely | Uninsured; high deductible |
Retail prices retrieved from Labcorp OnDemand and questhealth.com, September 2026. Hospital pricing varies by facility — look yours up using Section 6.
Consumer-initiated purchases cannot be submitted to insurance and will not touch your deductible. Quest states this plainly in its own terms, and it is the trade-off that decides this choice for most insured readers.
How to find out your price before the blood draw
You have two federal tools for this, and almost nobody uses them.
Ask for a Good Faith Estimate
If you are uninsured or choosing not to use insurance, providers must give you a written estimate of expected charges when you request one or schedule at least 3 business days ahead. If the bill lands $400 or more above it, you can dispute it — CMS explains the process for people not using insurance.
Look up the posted cash price
Hospitals must publish their standard charges, including a discounted cash price, under the federal hospital price transparency rule. Search your hospital’s posted file for 84443.
What to say on the phone
✅ Patient Action: Call the lab and say: “I’m self-pay. What is your discounted cash price for CPT 84443, and can you send me a Good Faith Estimate in writing?” Keep the estimate. You will need it if the bill disagrees.
Cost mistakes that lead to a surprise bill
Four avoidable errors turn a cheap test expensive.
Paying cash when you have coverage
A self-purchased test saves money today and contributes nothing toward your deductible. If you expect significant care this year, the cheaper option may cost more.
Letting a supplement waste the test
⚠️ Clinical Warning: Biotin — sold in hair, skin, and nail supplements — interferes with thyroid immunoassays and can distort a TSH result. Labcorp advises waiting at least 72 hours after your last dose before collection. A distorted result means repeating the test and paying twice. Why biotin skews thyroid results covers the timing.
No fasting is required for a TSH test, so that is one thing you cannot get wrong. Plans may limit how often they will pay for repeat thyroid testing — how often retesting is typically needed sets expectations before you book.
TSH test cost: common questions
1. How much does a TSH test cost without insurance?
Roughly $49 to $55 buying it yourself online, and typically more at a hospital outpatient lab.
2. What is the CPT code for a TSH test?
CPT 84443. Use this code when asking any lab for a cash price.
3. Does insurance cover a TSH test?
Usually yes when ordered for symptoms or monitoring. Routine screening with no symptoms may not be covered.
4. Does Medicare cover a TSH test?
Medicare states that Part B covers medically necessary diagnostic lab tests and beneficiaries usually pay nothing.
5. Can I order a TSH test myself?
Yes. Labcorp and Quest both sell consumer-initiated TSH tests without a doctor’s visit; discuss abnormal results with a clinician.
6. Why is a hospital TSH test more expensive?
Hospitals bill from a chargemaster, so the posted cash price for the identical code often exceeds independent lab pricing.
7. Can I use my HSA or FSA for a TSH test?
Both Labcorp OnDemand and Quest accept HSA and FSA cards, subject to your plan’s own eligibility rules.
8. Do I need a full thyroid panel or just TSH?
TSH is typically ordered first, with free T4 added by reflex if abnormal. Ask your clinician what fits your situation.
9. What is a Good Faith Estimate?
A written estimate of expected charges that providers must give uninsured or self-pay patients on request before scheduled care.
10. Will a self-purchased TSH test count toward my deductible?
No. Consumer-initiated tests cannot be billed to insurance and will not apply to your deductible.
11. Do I need to fast before a TSH test?
No fasting is required. Stop biotin supplements at least 72 hours beforehand to avoid a distorted result.
What to do next
Before the draw, do three things: ask which diagnosis code will be billed, ask the lab for its cash price for CPT 84443, and request a Good Faith Estimate in writing if you are paying yourself. Prices on this page were retrieved in September 2026 and move — treat them as benchmarks, not quotes.
About this content
How this article was put together: researched from recognised health sources, drafted with the help of AI tools, and edited by hand, with sources linked throughout.
Sameer Patel is the founder and editor of My Medicine Advisor. He is not a doctor or medical professional — before starting this site he worked in banking,…
Medical disclaimer
The content on MyMedicineAdvisor is provided for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Health information on this website should not be used to diagnose, treat, cure, or prevent any condition without guidance from a qualified healthcare professional. Always seek the advice of your doctor, physician, or another licensed healthcare provider with any questions you may have regarding a medical condition, symptoms, medications, or treatment decisions.
