ConFirm™ Premium Mail-in Biological Monitoring Service - 48 Tests ConFirm™ Premium Mail-in Biological Monitoring Service - 48 Tests CST480 48 tests (2 spore test strips and 1 control strip), postage paid envelope Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.