Should I take my levothyroxine the night before... - Thyroid UK

Thyroid UK

141,244 members166,489 posts

Should I take my levothyroxine the night before my blood tests?

BillieSt profile image
6 Replies

I am post RAI, given a script of levothyroxine to take nightly. I am booked into my doctors early Monday morning for blood test (have to phone consultant's sec 48 hours later, he looks at results to decide whether to tweak prescription). Prior to RAI, I was taking carbimazole and always held off taking it until after blood tests.

As I now take my medication at night, do I take it the night before or hold off until after the test in the morning? In which case, I'd have to take in the morning (probably by 9am), and then wouldn't I have a dilemma whether to take it again that evening? Yours, very confused!

Written by
BillieSt profile image
BillieSt
To view profiles and participate in discussions please or .
Read more about...
6 Replies
shaws profile image
shawsAdministrator

Miss the night's dose and take it after your blood test in the morning.

One of the admins takes it in the morning and again in the evening. Maybe she will confirm this. You could always 1/2 the evening dose and continue the nightly dose next night.

BillieSt profile image
BillieSt

thanks for replying. I was concerned about taking it twice in one day and getting out of kilter with my medication.

Moggie profile image
Moggie

Have a look at this question today that is very similar to yours but please read the answers as there is a bit of a discussion going on about this exact subject.

healthunlocked.com/thyroidu...

Hope it help - but as there are conflicting views it might just confuse you even more!!!!

Moggie x

BillieSt profile image
BillieSt in reply toMoggie

Thanks Moggie,

Makes sense I think to take a little earlier in the evening, say by 10pm to give a decent time lapse of 10 hours before my blood test at 8am. I think I'll go with that.

Moggie profile image
Moggie in reply toBillieSt

Your welcome.

Just make sure that you eat/drink nothing (except water) two hours before you take your levo wont you or you could compromise your absorption.

Moggie x

BillieSt profile image
BillieSt

Actually I've found this discipline a good thing, since I started on levothyroxine and can't guzzle snacks all evening (biscuit queen), I sleep better!

Not what you're looking for?

You may also like...

Should I take Levo before blood test?

Hi all, one week on from my thyroidectomy and slowly getting better. I have a blood test in morning...
Betty41 profile image

Should I take Levo before blood tests?

Evening everyone. I've reverted back to taking my 50mg Levo in the morning. I've got blood tests...
Fibi1907 profile image

Having a blood test. When do I take my Levo?

I now take my Levo about 10 o'clock at night and my blood test is scheduled for 9.15 in the...
JennyC2 profile image

Should I take my Levo at night when having blood tests the next day?

I take my meds at night I have previously taken my tablets before my blood test in the morning is...
VanessaB profile image

Should I give up taking levothyroxine at night?

Hi, I've been taking levothyroxine for over 10 years now and until recently have always taken it...
Emily78 profile image

Moderation team

See all
Jaydee1507 profile image
Jaydee1507Administrator
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.