Blood test this morning, took levo without thinking - will it affect TSH result? Thank you

[mountaingoat83]

[rosieno1]

In short, YES!!! Someone else will elaborate!!

[mountaingoat83 in reply to rosieno1]

I am an idiot! I thought it might only affect T4 which my doc doesn't really use.

[mountaingoat83]

Got to the docs and they'd cancelled my appointment anyway!

[Hidden]

Do you mean to say the GP cancelled your appointment due to you taking the Levo before the blood test or did they just cancel it anyway?

I only ask as I'm under the impression that if I took my Levo *after* the blood test and then told my GP they would get funny about it since I've been told to take them all the time regardless of a blood test to check the TSH.

Thanks

Jo xxx

[shaws Administrator in reply to Hidden]

Taking thyroid gland medication before a blood test can skew your results and may result in a decrease by the GP who believes that we should be kept within a certain TSH range. It is also wise to have the test as early as possible.

It was sensible to cancel the blood test and make a new one. You don't have to give a reason as they probably do not think it makes a difference, when it does.

[mountaingoat83]

Hi Jo,

They cancelled it anyway. When I started on Levo in March I was advised by knowledgable types on here not to take it beforehand so I never have, but maybe the important thing is to be consistent so you can monitor your levels accurately. I did think it was more important for t3/t4 than tsh but I'm not sure on that!

Emma x