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🎉 We’re Live! Get 25% Off Your Lab Tests! Use code GOLIVE at checkout. Offer valid for our first 50 customers only!
Condition Monitoring & ManagementThis test checks whether your thyroid medicine is at the right dose. It measures the brain's signal to the thyroid (TSH) and the thyroid hormone in your blood (Free T4).
Consider this test if you take levothyroxine or another thyroid medicine, recently changed your dose, or have symptoms of too much or too little thyroid hormone while on treatment.
Every biomarker in this panel, and exactly what it tells you.
Common questions about this test.
TSH and thyroid hormones vary slightly through the day, so consistent timing makes your results easier to compare.
About 6 to 8 weeks after starting or changing thyroid medicine, which allows your levels to settle.
Many clinicians suggest taking your usual dose after the blood draw on test day, because the medicine can briefly raise Free T4. Ask your provider if unsure.