Thyroid UK

urine tests for T3, T4 and Iodine and minerals

Hi has anyone used Genova's urine test which checks T4, T3 and Iodine levels? Do the results equate to blood tests for the same?

I am also looking at Genova's mineral profile which will tell me how Selenium, Zinc and Magnesium levels + other things are doing. Any comments positive or negative would be very welcome. Seems easier than trying to find a vampire to take yet more blood from me. The tests are expensive enough without adding on phlebotomy fees. Thanks for your help.

1 Reply

This researcher doesn't think that urinary T4 is equated to FT4 and isn't reliable in diagnosis. Personally I think urinary T4 is a crude estimate compared with direct blood tests. After all there isn't a kidney in the way of the test and one can't assume that the organ's activity doesn't have some sort of distorting effect as a filter.

WM Wiersinga Ned Tijdschr Geneeskd. 2007 Dec 22;151(51):2813-5. [Determining the thyroid hormones T3 and T4 in the urine: an unreliable test for hypothyroidism].


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