Thyroid UK
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Taking levothyroxine the day of 24 hour cortisol saliva test

Hi All,

I've received my 24 hour cortisol saliva test and just wanted to check wether I should take my levothyroxine as usual that morning?

Could it effect the results?

Also I have just raised my meds from 25-50 in the last week.

Any advice greatly appreciated. The test was quite expensive so I want to get the most accurate result.

Laura x

2 Replies
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Yes, you should take your levothyroxine on the day of the test.

If you want to know which drugs and supplements could affect the results from your saliva test :

stopthethyroidmadness.com/s...

rt3-adrenals.org/does_it_af...

I very much doubt that either list is complete.

I have done adrenal saliva testing before. I also take 5-HTP as an anti-depressant. I chose not to come off 5-HTP for two weeks, and just accepted that my cortisol results would be a little higher than they would be without the 5-HTP.

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Ah! Thankyou that list is very useful x

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