Extended Data Fig. 7: Inter-assay, Inter-day and Intra-day variability of spLUC assay.
From: Engineering luminescent biosensors for point-of-care SARS-CoV-2 antibody detection
a, 46 plasma samples were assayed a total of five times in three independent experiments over two days for each sensor. All five replicates are plotted on the graph, with the bar representing the average. The dotted line represents the cutoff values for positive and negative samples for the S and N sensors. b, The coefficient of variation was calculated for intra-assay, intra-day, and inter-day variability. Coefficient of variation is calculated as ratio of standard deviation to the average value.
