Thyroid blood test in the morning

[Tasia]

Good Morning

I’m off the get my thyroid blood test done again as recently had to change my medication. My appointment is 11.40 I haven’t eaten or drank anything I hope this is ok and I won’t get a wrong result. I had a long sleep today as very tired so haven’t been up long about an hour. Did I do the right thing or is there a risk it might come back wrong? Many thanks for any replies

[Lalatoot]

Are you on levo? what time did you take a dose?

[Tasia in reply to Lalatoot]

Hello there

I last took my Levo yesterday morning at 9 am

[SeasideSusie Remembering]

Tasia

Did I do the right thing or is there a risk it might come back wrong?

Depends on when you took your last dose of Levo (last dose should be 24 hours before blood draw). Also, if your GP is dosing by TSH alone then the earliest possible blood draw is required (no later than 9am) to give the highest possible TSH to avoid a reduction in dose or to indicate an increase in dose.

Hopefully you are getting FT4 and FT3 tests done as well, these are the tests that count as these are the thyroid hormone tests, TSH is not a thyroid hormone, it's a pituitary hormone, and should not be used for adjusting dose of Levo.

By the way, you could have had water to drink

[Tasia in reply to SeasideSusie]

Hi there

No all she said was thyroid blood test I’m not sure what they test from that. I last took my 50mg of levo yesterday morning. Thanks so much for reply.