How Much Does a Thyroid Test Cost? TSH, Free T4, Full Panel and Antibody Prices, With and Without Insurance

Thyroid testing is cheap at the lab and expensive at the clinic. TSH, the single most useful thyroid test, is $26.99 plus one $6 fee through TestWell, $35.90–$41 all-in at the other direct-to-consumer labs our price index tracks, and $49 on Quest's and Labcorp's own storefronts — the same assay at the same draw sites. A doctor's office adds a visit fee of $100–$250 self-pay, and the panel a clinic orders often includes markers you did not need. Full panels run $49.99 (TSH, Free T4, Free T3) to $109.99 (adding reverse T3 and TPO antibodies) through TestWell, against $89–$149 lab-direct or by mail-in kit. Insurance pays when there are symptoms or a diagnosis to monitor, but routine thyroid screening has no USPSTF recommendation, so it is never a no-cost preventive service — and with an unmet deductible the insured route usually costs more than the $32.99 self-pay TSH.

Self-pay prices; visit fees included where the route requires one. Competitor figures are all-in, from our dated price index.

Two cost drivers hide in the table. The visit fee is usually larger than the test. And repeat testing is built into thyroid care — a mildly abnormal TSH is repeated in 6–12 weeks before it means anything, and levothyroxine doses are checked 6–8 weeks after each change — so the per-test price matters more than it does for a one-off test.

TSH is the pituitary's signal to the thyroid and the most sensitive single test; nearly every thyroid work-up starts with it ($26.99). Most clinicians pair it with Free T4, the thyroid's main hormone, so a high TSH can be read as overt or subclinical hypothyroidism in one draw ($27.99 for both — the extra marker costs a dollar). Free T3 adds little when the question is hypothyroidism but matters for suspected hyperthyroidism and for people on T3-containing therapy ($30.99 alone; $49.99 in the three-marker panel). TPO and thyroglobulin antibodies ($25.99–$51.99) answer "is this Hashimoto's?" once TSH is abnormal; they are not a screening test. Reverse T3 ($35.99) is popular online and is not recommended as a dosing or diagnostic target by the thyroid associations — the TSH vs T4 vs T3 guide explains why.

The cost rule that follows: order TSH + Free T4 first ($27.99). Add antibodies if TSH comes back high ($25.99 for TPO), or order the Hashimoto's panel ($97.99) up front if autoimmune thyroid disease runs in your family or you have a goiter. The six-marker Complete Thyroid Panel ($109.99) is for people who want everything once — not a better first test, just a larger one. A clinic's "thyroid panel" (T3 uptake, total T4, TSH — $36.99 here, $89–$149 lab-direct) is an older configuration that free hormone tests have largely replaced.

When a clinician orders it for symptoms (fatigue, weight change, cold or heat intolerance, hair loss, irregular periods, palpitations), for a known thyroid condition, during pregnancy planning, or to monitor levothyroxine, yes — as diagnostic testing billed against your copay, coinsurance and deductible. The U.S. Preventive Services Task Force concluded in its most recent review that there is insufficient evidence to recommend routine thyroid screening in asymptomatic adults (an "I" statement), so a thyroid test is not among the no-cost-sharing preventive services, and a "just checking" request without symptoms may be billed to you in full.

For people on treatment the math favors insurance once the deductible is met, because monitoring draws recur. For a first look with an unmet deductible, the $32.99 self-pay TSH (or $33.99 with Free T4) is almost always cheaper than an insured visit. Health savings and flexible spending accounts pay for self-pay orders in any setting; keep the itemized receipt.

First, biotin. High-dose biotin (common in hair, skin and nail supplements) interferes with the immunoassays many labs use for TSH, T4 and T3 and can make results read falsely high or low — the FDA has issued a safety communication about it. Stop biotin two to three days before the draw; a result drawn on biotin may need to be repeated at your cost. Second, if you take levothyroxine, draw before the day's dose (or at least several hours after it), because a recent dose briefly raises Free T4. Time of day matters less for TSH than for testosterone or cortisol, but a consistent morning draw makes repeat tests comparable. Acute illness, recovery from illness and very low-calorie dieting all move thyroid numbers temporarily — test when you are well.

Thyroid results are rarely one and done. A TSH between about 4 and 10 mIU/L with a normal Free T4 — subclinical hypothyroidism — is repeated in 6–12 weeks before anyone treats it, often with TPO antibodies added ($25.99); a clearly high TSH with a low Free T4 leads to a clinician visit and, usually, a prescription and a follow-up TSH 6–8 weeks later, then every 6–12 months once stable. A low TSH points toward hyperthyroidism and adds Free T3, TSH-receptor antibodies (TRAb, $69.99) and often an endocrinology referral or an uptake scan. A lump or goiter means an ultrasound regardless of the blood numbers. Budget the first abnormal result as two tests and one visit; through TestWell that is roughly $60–$95 in lab work plus whatever your clinician charges, versus two clinic visits with two separate lab bills.

• Symptoms, no diagnosis, want an answer this week: TSH + Free T4 ($33.99 all-in through TestWell), drawn at the nearest Quest or Labcorp, results in 1–3 business days. Take an abnormal result to your clinician.
• Family history of Hashimoto's or a goiter: the Hashimoto's panel ($97.99 + $6) once, instead of TSH now and antibodies later.
• On levothyroxine, deductible met: use insurance for monitoring draws; they recur.
• On levothyroxine, high-deductible plan: self-pay TSH (or TSH + Free T4) between visits at $32.99–$33.99 and bring the result to your prescriber.
• Tempted by a six-marker mail-in kit at $149: the venous Complete Thyroid Panel is $109.99 + $6 with the lab's own reference ranges, and a plain TSH + Free T4 answers most questions for a third of that.
• Any route: stop biotin two to three days before; draw before a levothyroxine dose; don't test while sick.

Every order carries one $6 lab processing fee, charged once however many tests you add, and is drawn at Quest, Labcorp or BioReference with a licensed physician's authorization included. TSH $26.99 (Quest Health and Labcorp OnDemand $49); TSH + Free T4 $27.99; Free T4 $23.99; Free T3 $30.99 (Labcorp OnDemand $89); TPO Antibodies $25.99 (Labcorp OnDemand $69); Thyroid Antibodies (TPO + thyroglobulin) $51.99; Essential Thyroid Panel (TSH, Free T4, Free T3) $49.99; Hashimoto's Thyroid Panel $97.99; Complete Thyroid Panel (six markers) $109.99. Results post in 1–3 business days for TSH, Free T4 and Free T3 and 3–7 for the larger panels, with the lab's reference range and the physician-reviewed TSH explainer alongside. The thyroid hub compares every test and panel in one table.