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Fig. 3 | BMC Infectious Diseases

Fig. 3

From: Evaluation of serological lateral flow assays for severe acute respiratory syndrome coronavirus-2

Fig. 3

Determining the limit of detection of qualitative LFAs. Samples were ranked from highest concentration of anti-spike antibody (determined by Simoa) on the right, to lowest concentration (x-axis). As the sample concentration decreases to the left, a cumulative count of false negatives is shown on the y-axis. IgG is shown on the left, IgM on the right. Note the difference in magnitude of the y-axes between IgG and IgM; these LFAs are generally more sensitive to IgG than IgM

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