Fig. 1From: Evaluating risk factors for Clostridium difficile infection in adult and pediatric hematopoietic cell transplant recipientsAlgorithm to determine C. difficile infection (CDI) positivity for retrospective analyses, adult and pediatric populations combined. Definitions: PCR (polymerase chain reaction) for detection of gene tcdB, or both genes tcdA and tcdB; EIA (enzyme immunoassay) for detection of C. difficile GDA (glutamate dehydrogenase antigen); EIA for detection of toxins A & B; CTA for toxin B (cytotoxicity assay); review of patient’s chart was performed in order to manually review laboratory results and discharge/interim recordsBack to article page