I could be wrong but I thought this was a more general discussion on UA; some of us face testing by PO's and employers as well as Doc's. Anyway, I found this site which sells testing supplies pretty cheap. a single substance tester can be as low as $1.7x ea. I ordered a few and will let everyone know how well it works. https://www.testsymptomsathome.com/index2.asp
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"This may not be the end of the world
but you can see it from here." The
artist formerly known as Johnny Cougar.