2022
DOI: 10.3390/antibiotics11050576
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Clostridioides difficile Toxin B PCR Cycle Threshold as a Predictor of Toxin Testing in Stool Specimens from Hospitalized Adults

Abstract: Rapid, accurate detection of Clostridioides difficile toxin may potentially be predicted by toxin B PCR cycle threshold (tcdB Ct). We investigated the validity of this approach in an inpatient adult population. Patients who tested positive by C. difficile PCR (Cepheid GeneXpert) from December 2016 to October 2020 (n = 368) at a tertiary medical center were included. All stool samples were further tested by rapid glutamate dehydrogenase (GDH)/toxin B EIA and cell cytotoxin neutralization assay (CCNA). Receiver … Show more

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Cited by 2 publications
(1 citation statement)
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“…Another assay currently used is the enzyme immunoassay (EIA) for the detection of glutamate dehydrogenase expressed by all CD strains. This test is distinguished by a good sensitivity but is not able to predict the production or otherwise of toxins in case of positivity [16,[18][19][20][21][22]. The lack of sensitivity with respect to CTA precludes its use as a stand-alone test for the diagnosis of CDI.…”
Section: Diagnosismentioning
confidence: 99%
“…Another assay currently used is the enzyme immunoassay (EIA) for the detection of glutamate dehydrogenase expressed by all CD strains. This test is distinguished by a good sensitivity but is not able to predict the production or otherwise of toxins in case of positivity [16,[18][19][20][21][22]. The lack of sensitivity with respect to CTA precludes its use as a stand-alone test for the diagnosis of CDI.…”
Section: Diagnosismentioning
confidence: 99%