BCHE and COVID-19: Critically ill COVID-19 patients with BChE activity greater than 1.557 U/l measured within the first 24 h after admission lived significantly longer than patients with BChE activity below 1.557 U/l (survival in days as median; BChE activity >1.557 U/l (n = 14): 28 days vs. BChE activity < 1.557 U/l (n = 38): 15 days, p < 0.05, Figure 6).