I would agree not to use metametrix. I did their comprehensive analysis and got the dreaded PPTU result. The ONLY reason I ordered the test in the first place was to identify SPECIFIC parasites/protozoa. I feel like I got duped by their marketing spiel about how they use advanced dna testing and all that. I got zero useful information from the test, and then spend money on some useless supplements that the practitioner recommended after the tests.
If I do another test it will be Genova or Doctor's Data. I heard DD is very accurate with heavy metals too.