Evaluation of Four Commercial Rapid Immunochromatographic Assays for Detection of Cryptosporidium Antigens in Stool Samples: a Blind Multicenter Trial

Abstract

In a multicenter study, potassium dichromate-preserved stools from patients infected with Cryptosporidium parvum ( n = 20), C. hominis ( n = 20), and other Cryptosporidium species ( n = 10) and 60 controls were examined using four immunochromatographic assays. Assay sensitivity ranged between 50.1% and 86.7% for C. parvum and C. hominis but was <35% for other species.