Is biotin the only thing that should be avoided prior to a thyroid hormone test?

[kendrewaddams]

Aside from Levo and T3 24 hours beforehand.

[SlowDragon Administrator]

Last dose levothyroxine 24 hours before test

On day before blood test, split T3 into 3 smaller doses, at roughly equal 8 hour intervals, taking last 1/3rd of daily dose approx 8-12 hours before test

[kendrewaddams in reply to SlowDragon]

Thank you

[SeasideSusie Remembering]

Kendrewaddams

Biotin should be left off for 3-7 days before any blood test, all other supplements can continue for thyroid tests but take after the test on the day.

[kendrewaddams]

Thank you. And I'm right in thinking I can replace any b complex that has biotin, with just normal B12 right?

[SeasideSusie Remembering in reply to kendrewaddams]

And I'm right in thinking I can replace any b complex that has biotin, with just normal B12 right?

No. B12 is just the one B vitamin (B12). B Complex contains the full range of B vitamins - thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxine (B6), biotin (B7), folic acid (B9) and B12.

[SlowDragon Administrator in reply to kendrewaddams]

You mean just for those days before blood test?

Yes

Personally I take a separate folate and separate B12 during the week I stop vitamin B complex