Blood Test Preparation : Finally, I managed to... - Thyroid UK

Thyroid UK

144,207 members169,650 posts

Blood Test Preparation

AppleOrchard profile image
5 Replies

Finally, I managed to get another blood test appointment after the lab didn’t test my T3. I’d like to ensure I prepare properly.

My appointment is at 8.30am on Wednesday 8th June.

I take 75 mcg Eltroxin and 25 mcg liothyronine. I usually take the whole dose at 7 am.

I also take vitamin D, B12 and B complex. I stopped the B complex on 31 May in prep.

Thank you very much.

Written by
AppleOrchard profile image
AppleOrchard
To view profiles and participate in discussions please or .
Read more about...
5 Replies
SeasideSusie profile image
SeasideSusieRemembering

AppleOrchard

Take your last dose of Levo 24 hours before your test.

With your liothyronine split this into 2 or 3 doses the day before the test and take the last part of the dose 8-12 hours before the test.

You can continue to take your Vit D and B12 up to and including the day before the test and take after the test on the day.

AppleOrchard profile image
AppleOrchard in reply toSeasideSusie

Thank you very much - that’s really helpful. I’ll do it right this time and hope the lab does what’s needed. Thank you again!

AppleOrchard profile image
AppleOrchard in reply toSeasideSusie

I was thinking of splitting my T3 (25mcg) into three - first dose (half) at 7 am, second dose (quarter) at 2 pm and third dose (quarter) at 10.30 pm. Would that be right?

Thank you!

SeasideSusie profile image
SeasideSusieRemembering in reply toAppleOrchard

Yes, that sounds fine.

AppleOrchard profile image
AppleOrchard in reply toSeasideSusie

Thank you very much

Not what you're looking for?

You may also like...

Latest blood test results

Hi all, these are my latest test results. I am currently taking 125mcg levothyroxine, 2000IU...
catpurple7 profile image

Effect of vitamins on thyroid blood test

When I have my next thyroid blood test I have read that you shouldn't take biotin for 4 days before...
carer999 profile image

Taking meds before a blood test

How do test results differ if you take your meds T4/T3 on the day? I recently upped my meds from...
Reneey2k profile image

Confused by new blood results

Hi all. I had my new thyroid blood test results and I'm a bit confused. TSH is suppressed as...

My Blood Results from Medichecks - received today

Hi Recived my blood results today from my sample taken on 24th May. I followed guidance - stopped...
Divine1990 profile image

Moderation team

See all
Buddy195 profile image
Buddy195Administrator
PurpleNails profile image
PurpleNailsAdministrator
SlowDragon profile image
SlowDragonAdministrator

Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.

Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked.