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

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

JennyC2 profile image
11 Replies

I now take my Levo about 10 o'clock at night and my blood test is scheduled for 9.15 in the morning. Should I take the dose the night before or wait until after the blood test?

PS I switched from morning to evening after reading all the advice and comments on this website and so far I am pleased that I did so big thanks to everyone.

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JennyC2
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11 Replies
shaws profile image
shawsAdministrator

Miss the night's dose and take after blood test.

Princesspea profile image
Princesspea in reply toshaws

Eek, I had a blood test today at 8am but took my dose last night, didn't realise. Will it make a big difference to the results??

shaws profile image
shawsAdministrator in reply toPrincesspea

It could make a difference.

JennyC2 profile image
JennyC2

Great - thanks very much

helvella profile image
helvellaAdministrator

Good to hear the switch was good. We have seen a lot of positives - but, unfortunately, also some negatives.

Agree with shaws - that is what I do. And, on that one occasion, I do NOT worry about interference with breakfast, etc. :-)

Rod

JennyC2 profile image
JennyC2

Thanks - hopefully one day out of sync won't matter.

cal1971 profile image
cal1971

I have recently switched to bedtime levo too, but I don't think it makes a lot of difference to be honest ( yet)- considering I just used to throw it down my neck at some point in the day with all my other vitamins, I think I made the right decision and will stick with it.

How many hours should you leave between Levo and a blood test by the way? I too have a blood test tomorrow at 2.10 pm, should I not take my Levo tonight either?

shaws profile image
shawsAdministrator in reply tocal1971

I wouldn't. I think Helvella says too, that we should have our blood test first thing a.m. as the TSH is higher.

cal1971 profile image
cal1971 in reply toshaws

I didn't take it last night, so thanks for that, and have also not taken any of my other tabs or supps either. Would be great if I could choose my blood test time, but unfortunately I am in a rural area with oversubscribed surgery, so have to take what they give me and when they say!!!

shaws profile image
shawsAdministrator in reply tocal1971

Hope your results are good.

Jackie profile image
Jackie

Hi The other thing that effects thyroid tests is Beta Blockers, never take in the morning before thyroid test.

Best wishes,

Jackie

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