Should I split my T3 dose tomorrow before my bl... - Thyroid UK

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Should I split my T3 dose tomorrow before my bloods on Friday?

Spangle15 profile image
6 Replies

Sorry to ask another question, hopefully it’s a quick one to respond to. I have a blood test on Friday morning at 8.24 which will include thyroid. I know I need to take my thyroxine 24 hours before but I can’t remember if I take my whole T3 dose 8-12 hours before, or split the T3 dose and take the final bit 8-12 hours before? And if I split it, would it be half in the morning and half as the final dose. Thank you so much.

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SeasideSusie profile image
SeasideSusieRemembering

or split the T3 dose and take the final bit 8-12 hours before?

This.

if I split it, would it be half in the morning and half as the final dose.

Depends on your dose. Can it be split into 3, eg if you take 15mcg you could do 3 x 5mcg. If not split into 2.

Spangle15 profile image
Spangle15 in reply to SeasideSusie

Thank you. I can split it in 3.

cazlooks profile image
cazlooks

don't take any on the same day, I don't take my last t3 dose the night before either cx

SlowDragon profile image
SlowDragonAdministrator in reply to cazlooks

Last third of daily dose T3 should be approx 8-12 hours before test

AAP10 profile image
AAP10 in reply to SlowDragon

Does that also apply to NDT, Armour Thyroid too?

SlowDragon profile image
SlowDragonAdministrator in reply to AAP10

Yes

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