Comparison of the FeKal CON-Trate system with the formalin-ethyl acetate technique for detection of intestinal parasites.
The ability of the FeKal CON-Trate system (Trend Scientific, Minneapolis, Minn.) to recover parasite ova, cysts, or larvae from 300 fecal specimens was compared with that of the Formalin-ethyl acetate sedimentation technique. One hundred stool samples had previously been determined to contain 129 parasite forms. The FeKal system detected 127 parasites (sensitivity, 98.4%), and the Formalin-ethyl acetate sedimentation technique detected 125 parasites (sensitivity, 96.9%). Higher counts of parasite forms were obtained for 11 of 14 species of parasites in specimens prepared by the FeKal system. Four specimens were negative by the Formalin-ethyl acetate method and two by the FeKal system. These false-negative observations occurred in specimens with low counts of parasites. There were no false-positive results.
D000085:Acetates; D056890:Eukaryota / Q000302:isolation & purification*; D005069:Evaluation Studies as Topic; D005188:False Negative Reactions; D005243:Feces / Q000469:parasitology*; D005557:Formaldehyde; D006376:Helminths / Q000302:isolation & purification*; D006801:Humans; D010270:Parasite Egg Count; D010272:Parasitic Diseases / Q000175:diagnosis*
D000085:Acetates; D005557:Formaldehyde; C007650:ethyl acetate