The TRI-COMBO PARASITE SCREEN test is an enzyme immunoassay for the simultaneous qualitative detection of Giardia spp., Cryptosporidium spp., and/or E. histolytica antigen in human fecal specimens.

The test is indicated for use as a screen for fecal specimens from patients with gastrointestinal illness including dysentery to aid in the diagnosis of enteric infection resulting from giardiasis, cryptosporidiosis or amebiasis.

The TRI-COMBO PARASITE SCREEN test serves as a screen to rule out negative specimens and reduce the number of specimens that require additional follow-up testing. The test uses monoclonal and polyclonal antibodies to cell-surface antigens of Giardia, Cryptosporidium, and E. histolytica.

  • Ideal screening test for the three most common parasitic causes of diarrhea

Results in less than 2 hours

Simple procedure

Highly specific


TRI-COMBO PARASITE SCREEN Poster Presentations and Publications

Multisite Performance Evaluation of an Enzyme-linked Immunosorbent Assay for Detection ofGiardia, Cryptosporidium, and Entamoeba histolytica Antigens in Human Stool
Christy NC, Hencke JD, Escueta-De Cadiz A, Nazib F, von Thien H, Yagita K, Ligaba S, Haque R, Nozaki T, Tannich E, Herbein JF, Petri WA Jr. J, Clin Microbiol May 2012 50(5):1762-3. Epub 2012 Feb 29

Diagnosis of Multiple Enteric Protozoan Infections by Enzyme-linked Immunosorbent Assay in the Guatemalan Highlands
den Hartog J, Rosenbaum L, Wood Z, Burt D, Petri WA Jr. Am J, Trop Med Hyg. 2013 Jan;88(1):167-71. doi: 10.4269/ajtmh.2012.12-0142. Epub 2012 Nov 26