id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-322311-cg5xwx5a	Broder, Kari	Test Agreement between Roche Cobas 6800 and Cepheid GeneXpert Xpress SARS-CoV-2 Assays at High Cycle Threshold Ranges	2020-07-23		.txt	text/plain	773	51	60	title: Test Agreement between Roche Cobas 6800 and Cepheid GeneXpert Xpress SARS-CoV-2 Assays at High Cycle Threshold Ranges Our institution utilizes the Roche Cobas 6800 SARS-CoV-2 assay, the Cepheid GeneXpert Xpress SARS-CoV-2 assay, and a laboratory-developed test (LDT) based on a modified CDC protocol, but there is no gold standard for the diagnostic accuracy of these assays. We collected 35 positive (positivity determined per assay instructions) nasopharyngeal samples with an E target C T value of Ն30 on the Roche Cobas 6800 assay; those samples then underwent secondary testing on the Cepheid GeneXpert assay within 3 days of initial testing. One sample tested positive on the Cobas 6800 assay (C T ϭ 37.9) and negative by the GeneXpert assay and was confirmed to be negative on the LDT. Overall, the Cepheid GeneXpert Xpress SARS-CoV-2 assay and the Roche Cobas 6800 SARS-CoV-2 assay showed a high level of agreement among patients with high C T values.	./cache/cord-322311-cg5xwx5a.txt	./txt/cord-322311-cg5xwx5a.txt