Best Thyroid Tests Under $100 You Can Order Online Without a Doctor

What's the best thyroid test under $100 you can order online without a doctor?

Personalabs' Thyroid Panel with TSH at $99 is the best thyroid test under $100 by what it measures: its product page lists TSH, Free T4, Free T3 and Total T4 in a single draw (checked October 2026), and no other sub-$100 option in this guide includes both free hormones. If you only want the screening marker, HealthLabs' TSH Test at $39.00 is the cheapest, and Labcorp OnDemand's Standard Thyroid Test pairs TSH with Free T4 for $66.75 on sale from $89. All of them include the physician order and all of them need a lab visit rather than a mail-in kit.

This guide is built from each seller's own product pages and from MedlinePlus, the National Library of Medicine's consumer health site, rather than first-hand use. Prices were read in October 2026 and move often, so treat them as the figures on that day. None of these tests diagnoses a thyroid condition; a result is something to talk to a clinician about.

Three different purchases hide behind "a thyroid test"

The sub-$100 market sells three distinct things, and the cheapest is not a smaller version of the others.

A TSH-only test measures one hormone. MedlinePlus describes it plainly: "A TSH test is a blood test that measures this hormone", and "A TSH level that is too high or too low may be a sign of a thyroid problem." It is the screening marker, and MedlinePlus is equally plain about what follows an abnormal result: "If your test results aren't normal, your provider will probably order other thyroid blood tests to find out what's causing your thyroid problem."

A TSH plus Free T4 pair adds the thyroid hormone itself in its unbound form. MedlinePlus notes that "T4 levels can be measured with either a free T4 test or a total T4 test", and of the free T4 test it says "Medical experts believe this test is more accurate than a total T4 test, so it's used more often."

A fuller panel adds Free T3, and sometimes Total T4 or antibodies. Below $100 only one seller in this guide manages Free T3 and Free T4 together.

There is also an older style of panel built on Total T4 and T3 Uptake, which yields a calculated Free Thyroxine Index (T7). MedlinePlus explains the relationship: "FTI is the amount of free T4 in your blood based on a calculation using your total T4 test results." HealthLabs' $59.00 panel is this type, which is why it is listed separately below rather than as a cheaper twin of the Personalabs panel.

The picks at a glance (prices read October 2026)

The HealthLabs strike-through figures are the company's own list prices and the $39.00 and $59.00 are what you pay; the Labcorp OnDemand and Quest figures are the stores' own current prices on the day read.

Personalabs Thyroid Panel with TSH, $99

This is the one to buy if you want the broadest sub-$100 picture. The product page's FAQ states: "A comprehensive thyroid panel includes TSH, Free T4, Free T3, and Total T4", and the ordering block repeats that "The complete thyroid panel includes TSH, Free T4, Free T3, and Total T4". The same page marks the panel "HSA and FSA eligible" and prices it at "$99 Reg. $99".

Everything Personalabs sells is a lab draw, not a kit; its TSH page carries the line "This is not a home test kit. You will need to visit a local lab for testing." Personalabs also answers the no-doctor question the other sellers skirt: "Can I order a TSH blood test without a doctor? Yes — in most states", with the caveat that "A small number of states restrict direct-to-consumer lab testing; contact us to confirm availability in your state." Results arrive in the Personalabs account "within 24–48 hours". Check the price at Personalabs.

HealthLabs TSH Test, $39.00

The cheapest way in this guide to get the single screening marker from a national lab. The product page header reads "Most Results in 1-3 Days 110% Price Guarantee 78 39.00", and the test description is unambiguous about scope: "This test measures TSH only and does not include T3 or T4." Its prep note is "Fasting is not required for this panel."

The 110% guarantee is spelled out on the same page: "If you find the same test for a lower price from a comparable provider, contact us. We not only match the price, we beat it by an additional 10 percent of the difference." Given Quest's $49.00 plus fee and Personalabs' $78 for the same marker, you are unlikely to need it. See current price.

Labcorp OnDemand Standard Thyroid Test, $66.75 on sale from $89

Labcorp's own consumer store sells a two-marker test, described as "Assess thyroid function with a Free T4 and TSH blood test." The page states "The Standard Thyroid Test measures both thyroid-stimulating hormone (TSH) and Free T4 (thyroxine) in your blood to assess thyroid function", and lists it at "$66.75 25% off $89" when read in October 2026. The step-up on the same page, a Custom Thyroid Test, was listed at $202.5 against $247, well outside this budget.

One prep detail worth knowing before any thyroid draw appears here: "If you're taking a supplement containing biotin (also called vitamin B7 or B8, vitamin H, or coenzyme R), commonly found in products promoting nail, skin and hair health, it is recommended that you wait at least 72 hours from your last dose before sample collection." That caution applies to thyroid assays generally, not only Labcorp's.

Quest Thyroid TSH Function Test, $49.00 plus $6.00

Quest's consumer store lists the TSH test at "$49.00 + $6.00 Physician Service Fee" and marks it "HSA/FSA Accepted". The page describes the purpose as measuring "the level of thyroid-stimulating hormone (TSH) in your blood". The separate physician fee is the thing to notice: HealthLabs and Personalabs fold the physician order into the sticker price, so compare Quest's two numbers added together, not the headline alone.

HealthLabs Thyroid Panel with TSH, $59.00

Cheaper than the Personalabs panel but not the same product. HealthLabs lists it at "110% Price Guarantee 118 59.00" and its contents as "Total T4, measuring the total amount of thyroxine in the blood T3 Uptake, used to estimate thyroid hormone binding and assist in calculating T7 T7, also known as the Free Thyroxine Index, used to estimate active free T4 levels TSH, Thyroid Stimulating Hormone, which regulates thyroid hormone production." The page's own FAQ summarizes it as "TSH in addition to T4, T3 uptake, and T7".

So the free T4 figure here is estimated from a total T4 and an uptake ratio, the FTI method MedlinePlus describes, rather than measured directly, and there is no Free T3 at all. For a TSH plus thyroid-hormone picture on a tight budget it is a legitimate choice; just do not read it as a cheaper copy of the $99 Personalabs panel. See current price.

Personalabs TSH Blood Test, $78

Listed at "$78 Reg. $78", this is the priciest TSH-only option here, but it is the way to get a TSH-only draw at Labcorp with Personalabs' physician order and portal. Its prep note matches the others: "No fasting is required. You can eat and drink normally before your TSH test." If you are already using Personalabs for other tests and want everything in one account, it makes sense; if the TSH is the only thing you want, HealthLabs or Quest costs less. Check the price at Personalabs.

Sellers not scored here

Walk-In Lab and DiscountedLabs both list sub-$100 thyroid tests and panels, and both were cited by assistants when we ran this question. We left them out of the table because their pages lean on per-order physician fees and promotional codes that change the effective price from week to week; check their pages directly if you want more options. Ulta Lab Tests' pages did not load as readable text when we checked, so we could not verify anything there.

Before you order any of them

• State rules. Personalabs is the only seller here that states the limitation on its pages ("Yes — in most states"). Confirm your state with any seller before paying.
• Medicines. MedlinePlus advises: "You may need to stop taking certain medicines before this test, so tell your provider about everything you take", and in the same breath, "But don't stop taking any medicines unless your provider tells you to."
• Fasting. None of the TSH-only tests above requires it, per the sellers' pages. Panels bundled with metabolic markers can; read the product page.
• Paying with pre-tax money. Quest marks its test "HSA/FSA Accepted" and Personalabs marks its panel "HSA and FSA eligible"; our HSA and FSA guide for lab tests covers the paperwork.
• The lab, not the seller, runs the assay. All of these draws happen at CLIA-certified national labs; our explainer on what CLIA certification means is the background, and our hormone panel cost guide shows how thyroid pricing compares with other hormone panels.

For every category we track, see our full shortlist.

Sources

1. TSH Test (Thyroid-Stimulating Hormone) — HealthLabs.com — HealthLabs.com (checked October 2026)
2. Thyroid Panel with TSH (Thyroid Stimulating Hormone) — HealthLabs.com — HealthLabs.com (checked October 2026)
3. TSH Blood Test – No Doctor Visit Required | Personalabs — Personalabs (checked October 2026)
4. Thyroid Panel Blood Test — TSH, Free T3 & T4 | Personalabs — Personalabs (checked October 2026)
5. Thyroid Blood Test for Optimal Wellness: Labcorp OnDemand — Labcorp OnDemand (checked October 2026)
6. Thyroid TSH Function Test | Quest — Quest (questhealth.com) (checked October 2026)
7. TSH (Thyroid-stimulating hormone) Test: MedlinePlus Medical Test — MedlinePlus (U.S. National Library of Medicine) (checked October 2026)
8. Thyroxine (T4) Test: MedlinePlus Medical Test — MedlinePlus (U.S. National Library of Medicine) (checked October 2026)