Update and blood results

[Emat]

Hi everyone,

Just an update from my last post, my doctor is happy with my last blood results

Serum free T4 13.6 pmol/L (12.0 - 22.0)

Serum TSH level 0.38 miu/L (0.27-4.2)

She said she will check my vitamins in 6 weeks. My last bloods showed low vit D and B12 in the lower range. I am now taking my own supplements and am taking 150mg levothyroxine she has me on 125, but I still felt ill. Anyway I have come to the conclusion I need to sort myself out as the doc is not interested. I have ordered a private blood test from medicheck ultra vit. My question is I took my Levo last night 1am and want to go first thing in the morning, should I take my Levo tonight or leave it until I’ve had the test?

Thanks in advance.

[SeasideSusie Remembering]

Emat

It's normally advised to leave 24 hours between last dose of Levo and blood draw. Any longer and you get a false low FT4, take Levo close to the blood draw and you get a false high FT4. So if you took your Levo at 1am Wednesday and had blood draw at, say 9am on Thursday, that would be 32 hours so your FT4 result would show a lot lower than what is normally circulating.

[Emat in reply to SeasideSusie]

Thanks SeasideSusie,

Ok so it will probably be better to take my next dose tomorrow morning and go for the blood test on Friday instead.

[SlowDragon Administrator in reply to Emat]

Don't do a private test on Friday.

If you post it Friday, it won't get there until Saturday.

Wait until Monday

If taking any supplements that have biotin in, stop these 3-5 days before. Eg vitamin B complex

Stop any iron supplements a week before

[Emat]

Thanks SlowDragon I have stopped the B complex and will go on Monday.