Is it ok to do t3 blood test after taking thyroxine. I had t4 and tsh last week missing my am dose but today I took it at 5 am and am off for blood test will it be ok?
Thank you
T3 not fasted?: Is it ok to do t3 blood test... - Thyroid UK
T3 not fasted?
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richard123
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2 Replies
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shawsAdministrator
Your result will be skewed. 24 hours gap is advised if having a blood test. I'd cancel.
Richard123,
It will take days for the T4 dose to be absorbed and convert to T3 so I think it will be fine.
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