NAAT=Nucleic Acid Amplification Test Table Diagnostic Tests for Some Protozoal and Parasitic Pathogens Microorganism Microscopy Culture NAAT Antigen Detection Antibody Detection Babesia ✓ ✓ ✓ Cryptosporidium ✓ ✓ ✓ Cyclospora ✓ ✓ Entamoeba ✓ ✓ ✓ ✓ Enterobius vermicularis ✓ Giardia ✓ ✓ ✓ Intestinal nematodes ✓ ✓ ✓ Leishmania species ✓ ✓ ✓ ✓ Plasmodium species ✓ ✓ ✓ Scabies ✓ Taenia solium ✓ ✓ Toxocara species ✓ ✓ Trichinella spiralis ✓ ✓ Trypanosoma species ✓ ✓ Adapted from Bennett JE, Dolin R, Blaser MJ: Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases, 9th Edition.