id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-311446-afhw0450	Suhandynata, Raymond T	Multi-platform Comparison of SARS-CoV-2 Serology Assays for the Detection of COVID-19	2020-08-07		.txt	text/plain	3328	194	56	Diazyme, Roche, and Abbott SARS-CoV-2 serology assays were compared by correlating the raw quantitative values from each platform for all samples from PCR positive patients ( Supplementary Figure 2A-C) . The impact of disease prevalence on the PPV and negative predictive value (NPV) for the Diazyme, Roche, and Abbott SARS-CoV-2 serology platforms were calculated using the PPA and NPA of the ≥ 15 day patient group ( Table 4 and Supplementary Table 4 ). The prevalence for COVID-19 in the ≥ 15 day patient group was 12.3%, and the observed PPV for the Diazyme IgM/IgG panel, the Roche total Ig, and the Abbott IgG assays were 89.3%, 96.0%, and 92.6%, respectively. We evaluated longitudinal samples from 16 SARS-CoV-2 PCR positive patients with the Diazyme, Roche, and Abbott serology platforms (Figure 2A -2D) . We evaluated the PPA and NPA of the Diazyme, Roche, and Abbott SARS-CoV-2 serology assays using the same samples across all three platforms.	./cache/cord-311446-afhw0450.txt	./txt/cord-311446-afhw0450.txt