and 13 C urea breath test showed that 92 children were infected with H. pylori and that 210 were not. Stool samples were tested by EIA using two different production lots and an optical density ...

Polymerase chain reaction (PCR) testing of a stool sample was positive for Clostridioides difficile; however, enzyme immunoassay (EIA) testing for C. difficile toxins A and B results were negative.

For example, the influence of frozen or bloody stool samples on EIA results remains unclear ... 14 but this explanation is unlikely given that this test is licensed for use in humans, including ...

Developed by R-Biopharm AG, a German company, the “Ridascreen Norovirus 3rd Generation EIA” test could ... that the Ridascreen test could detect norovirus across stool samples about 2/3 ...

Three diagnostic test accuracy studies were published in full and ... and excellent specificity for the detection of bacterial pathogens in stool specimens. Abbreviations: EIA, enzyme immunoassay; PCR ...

Included patient encounters had a positive C difficile PCR test and either a toxin EIA-positive assay (confirmed cases) or toxin EIA-negative assay (controls). Available encounter stool specimens ...