Among 130 C difficile PCR-positive patient encounters, the investigators determined 61.5% (n = 80) were toxin EIA negative and 38.5% (n = 50) were toxin EIA positive.

Published: November 24, 2022 5:24am EST Updated: December 18, 2022 5:36pm EST ...

GREENSBORO, N.C. — You took two COVID tests: One is a rapid at-home test, and it's negative. One is a PCR test, done through a clinic and a lab, and it's positive. Is one of the tests wrong? The ...