Urgent question re blood test time : Usually I... - Thyroid UK

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Urgent question re blood test time

hendb profile image
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Usually I take thyroid med at bedtime (also upon rising and at noon)

I was planning to do thyroid bloodwork tomorrow

What about my bedtime dose? Is it ok if I take it now ( 5pm) it would be 15 jours medication-free

Of course I won’t take the morning dose before the blood draw

Also I’m on NDT is it ok if I test only ft3 and ft4( not the TSH)

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SlowDragon profile image
SlowDragonAdministrator

If this is private blood test kit only do tests on Monday or Tuesday morning....never a Friday

For full testing you want vitamin D, folate, ferritin and B12 tested as well as TSH, Ft4 and Ft3

Do you have Hashimoto’s

On NDT split dose day before test and take last third of daily dose 8-12 hours before test

If supplementing any supplements that contain biotin you need to stop these a week before all blood tests as biotin can falsely affect test results

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