blood test coming up : I have an appointment with... - Thyroid UK

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blood test coming up

Kimkat profile image
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I have an appointment with my private endo at the end of the month and was wondering whether I need to delay taking my T3 24 hrs prior to the test? I always leave my T4 before it but I have to split my T3 as it’s taken in 2 doses, one in the morning and one in the afternoon.

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Kimkat profile image
Kimkat
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Jaydee1507 profile image
Jaydee1507Administrator

There is a pinned post with details of dosing for blood test timings. healthunlocked.com/thyroidu...

For T3 the maximum time is 8-12hrs, so delay 2nd dose that day before the test.

Kimkat profile image
Kimkat in reply to Jaydee1507

Thank you, my last dose of T3 will be 3pm, I’ll be doing my bloods around 8.30am the following day so that’s fine 🙂

Jaydee1507 profile image
Jaydee1507Administrator in reply to Kimkat

That’s over 17 hours. Delay 2nd t3 dose until after 8.30pm.

Kimkat profile image
Kimkat in reply to Jaydee1507

Yes I’ll be taking my morning dose at 08.30 after my bloods so I’ll delay previous evening as you said, thank you

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