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TSH

$19.50
LabcorpNo fasting2-4 business days

Plus a $12 blood draw fee, charged once per order. Free when your order includes a bundle.

Sample
Blood draw
Preparation
No fasting needed.
Results in
2-4 business days after your sample reaches the lab

Tests are ordered by an independent licensed physician. This service does not replace care from your own doctor. Talk with a healthcare professional about your results.

This test measures thyroid-stimulating hormone (TSH), a pituitary signal that shows how hard your body is working to make thyroid hormone. It’s the standard first test for thyroid function.

People order it when they feel unusually tired, cold or hot, or notice unexplained weight or mood changes. If you take biotin supplements, ask your doctor whether to pause them before your draw — biotin can interfere with this kind of test.