Entero-Test or aspirates. Although more widely used for recovery of helminth parasites protozoan cysts may be recovered this way as well. 2 You can add a drop of xylene to clear the debris. . Parasitology Virology and Mycology Final. Fecal Examination for Respiratory Parasites. The detailed technical procedures should be used in conjunction with additional specific chapters in this section to. No Giardia parasites are seen when the string is examined. The specimen may be centrifuged 10 min at 500 g and should be examined immediately as a wet mount for motile organisms. What Is a String Test. The Entero-Test capsule consists of a textured string within a gelatin capsule. Sabin-Feldman dye test is used to diagnose. Giardia parasites can be seen when the. 160 A urine sample from a 26-year-old woman is examined and an organism is observed that displays jerky motility. Iodine also can be used. ...