First Blood Test Booked Since Prescribed Thyrox... - Thyroid UK

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First Blood Test Booked Since Prescribed Thyroxine

U02ejp6 profile image
2 Replies

I have my first blood test booked at 08:15am on 22nd June. I started taking 100mg thyroxine on 26th April.

I am very confused what to do prior to my blood test? I usually take my thyroxine at either 1/ 2 am or when I first wake in the morning. Help would be much appreciated :)

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U02ejp6
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greygoose profile image
greygoose

Take your thyroxine after the blood draw, or you will skew the results and your level will come back very high. :)

SeasideSusie profile image
SeasideSusieRemembering

Also, fast after your evening meal the night before, you can drink water though. Delay breakfast until after the blood draw.

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