Fig. 2.
Comparison of LFA diagnostic performance for IgM, IgG, or total antibodies to diagnose SARS-CoV-2 infection. MedTest (circle), IgM (black circle), IgG (empty circle), and IgM or IgG (orange circle); Eco Test (diamond), IgM (black diamond), IgG (empty diamond), and IgM or IgG (orange diamond); Camtech (square), IgM (black square), IgG (empty square), and IgM or IgG (orange square); Wondfo IgM or IgG (orange triangle). Sensitivity (a); specificity (b); accuracy (c); and Youden's index (d). LFA, lateral flow immunochromatographic assay.