biotin

[lovelab]

Hi all, asking for mt daughter. Does biotin increase or decrease TSH levels in blood tests. She has just had blood results in with TSH at 18 (0.3 to 5) . Up til now she has always had results bottom of range but high TPOs and not on any thyroid hormones. Dr tests her every 6 months to see how things evolve but this high result is quite out if blue. She doe take gummies for healthy hair and they contain biotin. So wondering how it interferes? Thanks for your feed back.

[helvella Administrator Thyroid UK]

I don't think that we can be certain which way results go.

When the issue was first being discussed all that was said was that there could be interference from biotin.

Though there has been more work, I don't think we can categorically answer that.

Also, thought the effect is important, I'd be surprised if it could account for a leap like that.

Did they run Free T4 (or anything else) as well?

helvella - Biotin supplementation and testing

A short article about how and why biotin can affect blood tests. Includes information about how to avoid any problems.

helvella.blogspot.com/p/hel...