The pituitary signal that tells the thyroid how hard to work, and the first-line screen for thyroid function. High usually means underactive, low means overactive.

$4.90
cheapest all-in, at Fitomics · Insider · LabCorp. Compared across 22 order sites.

Every order site, cheapest first

All-in = the test price plus that site's one-time blood-draw or order fee. 6 of these sites have changed this price since our June baseline. Always confirm on the vendor's own site before ordering.

Order sitePerforming labTestDraw feeAll-inStatus
Fitomics · Insider · LabCorp ↗ LabCorp $4.90 - $4.90 verified
Fitomics · Insider · Quest ↗ Quest $4.90 - $4.90 verified
DrSays · Subscription · LabCorp ↗ LabCorp $8.99 - $8.99 verified
Dirt Cheap Labs · Quest ↗ Quest $3.74 $10.00 $13.74 verified
Fitomics · Insider · BioReference ↗ BioReference $14.90 - $14.90 verified
M&M Labs and Diagnostics · LabCorp ↗ LabCorp $8.00 $8.00 $16.00 verified
Dirt Cheap Labs · LabCorp ↗ LabCorp $6.50 $10.00 $16.50 verified
GoodLabs ↗ Quest / LabCorp / BioReference $5.00 $12.00 $17.00 verified
DrSays · No Sub · LabCorp ↗ LabCorp $8.99 $9.99 $18.98 verified
Marek · Quest ↗ Quest $9.00 $10.00 $19.00 verified
OwnYourLabs · LabCorp ↗ LabCorp $13.20 $6.00 $19.20 verified
Fitomics · Outsider · LabCorp ↗ LabCorp $5.90 $20.00 $25.90 verified
Fitomics · Outsider · Quest ↗ Quest $5.90 $20.00 $25.90 verified
JasonHealth · Quest ↗ Quest $10.00 $18.00 $28.00 verified
WalkInLab ↗ LabCorp / Quest $35.00 - $35.00 verified
Fitomics · Outsider · BioReference ↗ BioReference $15.90 $20.00 $35.90 verified
Ulta Lab Tests · Quest ↗ Quest $22.95 $12.95 $35.90 verified
Grass Roots Labs · Quest ↗ Quest $18.89 $28.00 $46.89 verified
DiscountedLabs · Quest ↗ Quest $39.00 $8.00 $47.00 verified
LabCorp OnDemand · LabCorp ↗ LabCorp $49.00 - $49.00 verified
Quest Health · Quest ↗ Quest $49.00 $6.00 $55.00 verified
PrivateMDLabs ↗ LabCorp / Quest $117.00 - $117.00 verified

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Prices are collected periodically and can change or lapse. This is a research and education resource, not medical advice. Pricing framework and source data compiled by PedroDaGr8, reproduced with permission.