id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-293544-nemw29r7	Valdivia, Arantxa	Qualitative assessment of SARS‐CoV‐2‐specific antibody avidity by lateral flow immunochromatographic IgG/IgM antibody assay	2020-08-02		.txt	text/plain	765	57	45	Here, we carried out qualitative assessment of SARS‐CoV‐2‐specific antibody avidity using an urea (6M) dissociation test performed on a lateral flow immunochromatographic IgG/IgM device. 2 Although serology testing is mainly aimed at identifying individuals who have previously been exposed to SARS-CoV-2, it may also aid in diagnosis of ongoing COVID-19, particularly in RT-PCR negative patients who present at relatively late times after infection. 3 Knowledge of the precise timing of infection may be of clinical and epidemiological relevance as viral shedding in the upper respiratory tract seems to continue up to 7 to 9 days after onset of symptoms in patients presenting with mild or moderate COVID-19. T A B L E 2 Qualitative assessment of SARS-CoV-2-specific antibody avidity in serial serum samples from patients with COVID Qualitative assessment of SARS-CoV-2-specific antibody avidity by lateral flow immunochromatographic IgG/IgM antibody assay	./cache/cord-293544-nemw29r7.txt	./txt/cord-293544-nemw29r7.txt