Ive recently had Fresh stool (within 1 hour) PCR testing for Microsporidia, GIardia, Entamoeba histolytica, cryptosporidium, Blastocystis, dientamoeba fragilis and a blood serology for entamoeba histolytica. All came back negative. Ive done these at the serum staten institut with christen rune stensvold, a world famous parasitologist.