Window Periods
Category (No. of Inclusive Tests) Median (Interquartile Range; Days) 99th Percentile (Days)
Antibody/antigen laboratory (4) 17.8 (13.0, 23.6) 44.3
IgG/IgM-sensitive laboratory (3) 23.1 (18.4, 28.8) 49.5
IgG-sensitive rapid screening (6) 31.1 (26.2, 37.0) 56.7
IgG-sensitive supplemental (2) 33.4 (28.5, 39.2) 58.2
Western blot (viral lysate) (1) 36.5 (31.0, 43.2) 64.8
@ Exlo
