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Thyroid Disorders Message Board
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Old 08-25-2008, 12:24 PM   #1
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When to test thyroid hormones?

Hi! I need to know, please, when/how it is best to have thyroid hormones (Free T4, Free T3, TSH) & antibodies blood tests.

Does it matter which phase of the menstrual cycle one is in? Is there anything to be done or not to be done in preparation for the tests (like abstaining from certain foods)? Does the eating - not eating before the test affect the results? Is it better to have the tests in the morning?

I'll appreciate any information you consider necessary for the above mentioned tests.

Thanks

 
Old 08-26-2008, 09:10 AM   #2
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Re: When to test thyroid hormones?

Time only matters if you're seeing an MD who diagnoses according to TSH only. TSH is apt to be higher in the very early morning, so testing then can win a diagnosis from this sort of MD.

Otherwise, time of day or month, fasting or not... none of it makes a difference.

Last edited by midwest1; 08-26-2008 at 09:11 AM.

 
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Old 08-26-2008, 11:36 PM   #3
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Re: When to test thyroid hormones?

Thank you very much for replying!

 
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