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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Does The Intake Of 100mcg Tablet Before Blood Test Give Correct Results?

Hi, Yesterday morning i went for T3, T4 & TSH test with out eating any thing. As i had thyroid since 1.5yrs.medicating with 100mcg thyronorn tablets. But before going to test i have taken that 100mcg tablet and given b lood sample for tests. The test results are T3, T4 are in nomal range but TSH is higher than the range i.e, 8.12 and my age is 30yrs Female. I delivered a baby on August since that time i didn t went for Thyroid test. Kindly reply me to take the tablet before giving sample will give correct results or not? -- Thanks, SD.
posted on Sat, 8 Mar 2014
Twitter Sun, 25 May 2014 Answered on
Twitter Mon, 26 May 2014 Last reviewed on
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General & Family Physician,  's  Response
Hello!
I read carefully your query.
Yes,taking thyronorn 100 mcg the morning of the day you have to run thyroid tests can affect the test results.For this reason is recommended to skip the dose the morning of the day test and take the dose after have done the test.
I suggest to repeat the thyroid tests,following the recommendation so you can have a real result in order to avoid unnecessary dosage changes in your therapy.

Hope my answer has helped.
Take care.
Dr.Rovena
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Does The Intake Of 100mcg Tablet Before Blood Test Give Correct Results?

Hello! I read carefully your query. Yes,taking thyronorn 100 mcg the morning of the day you have to run thyroid tests can affect the test results.For this reason is recommended to skip the dose the morning of the day test and take the dose after have done the test. I suggest to repeat the thyroid tests,following the recommendation so you can have a real result in order to avoid unnecessary dosage changes in your therapy. Hope my answer has helped. Take care. Dr.Rovena