Testing tomorrow - DHEA interference?

[Tuxi1]

Quick question - I am meant to be having my thyroid tested tomorrow am but took some DHEA today and some kelp and wondered if this would change the results too much? Should I wait a day or two and get them done without taking these supplements? I have stayed off biotin but have also taken B's - not sure if they effect results? I am on a small amount of T3 but was told not to take that out.Thanks for the advice!

[Jaydee1507 Administrator]

Biotin is the main thing to skip for about 4-7 days before the test. Have you got the timing right with last doses of Levo - 24hrs, T3 8-12hrs?

[Tuxi1 in reply to Jaydee1507]

would the test to show lower levels of T3 or TSH if I didn't do these timings? Why would I have to take T3 at a different time to normal? thank you

[Jaydee1507 Administrator in reply to Tuxi1]

If you only take your T3 once a day you need to split it or delay the dose the previous day to allow 8-12hrs before the blood test. Otherwise the test will be a false low result.

FT3 blood level

[radd]

Tux1,

‘ I have stayed off biotin but have also taken B's’.

If you mean a B Complex, this will likely contain biotin also, and the iodine in kelp has been shown to alter TFT’s.

If this were me I would wait a few days.

[Tuxi1 in reply to radd]

Managed to change it so have a couple more days to not take things! There was no biotin in my suppliment - more a multi vitamin. Thank you