Gopalakrishnan P. Gopalakrishnan P. Asked 8 months ago

Should i take thyroid meds before blood test?

I have to get a thyroid blood test done tomorrow morning. My doc told me to fast, but didn't say anything about my thyroid meds. Should I take them before the blood draw, or wait?

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5 answers

Seema Devi Seema Devi Joined Jul 2026 3 months ago
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For my son's thyroid tests, the doctor always tells us to give him the medicine *after* the blood test. It's important for the results to be correct. So, just wait till the test is done, then take your dose.

Priya Sharma Priya Sharma Joined Feb 2026 8 months ago

Oh, I always get so confused about this too! But every time I ask, my doctor says no, don't take it before. It makes sense, they want to see your body's natural level before the meds kick in. Just take it right after the test, that's what I do.

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Rajesh Kumar Rajesh Kumar Joined Jun 2026 4 months ago

Simple rule for thyroid blood tests: skip your morning medicine, get your blood drawn, then take your medicine. This way, the results are accurate. Don't complicate it, just follow this. And if you're still unsure, just call the lab or your doctor once.

Meena Joshi Meena Joshi Joined Apr 2026 6 months ago

No, it's generally recommended not to take your thyroid medicine before the blood test. Take it after for accurate results. Your doctor or the lab will usually confirm this instruction.

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Ganga Devi Ganga Devi Joined Mar 2026 7 months ago

Betiyan, for these tests, the doctor always says to take the medicine after you give your blood. So don't take it in the morning, wait till you are done with the test. This way, the reports come out correct. Don't worry, it's a common instruction.

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