When to have my last T3 only dose before blood ... - Thyroid UK

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When to have my last T3 only dose before blood test.

Lalacat profile image
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I couldn't get an early appointment with the new endo. My appointment is at 2.10p.m. Would it be OK to take my 6.30a.m. dose?

Also, could anyone tell me in a percentage form, how much higher or lower the afternoon FT3 result would be, compared to my last FT3 result taken at 8.15a.m.?

Ta!😊

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Lalacat
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Clutter profile image
Clutter

Lalacat,

It's probably safe to assume that T3 will no longer be peaking in your bloodstream 8 hours after last dose.

The graph in this link shows how TSH and FT3 fluctuate throughout the day healthunlocked.com/thyroidu...

Lalacat profile image
Lalacat in reply to Clutter

Thank you Clutter, that's what I thought, just double checking!

Glynisrose profile image
Glynisrose

Always take meds AFTER blood tests.

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