BCHE and COVID-19: We could not detect any significant difference in BChE activity between women and men in critically ill COVID-19 patients (women vs. men on day 1: 1341 U/I (815–1.530, n = 16) vs. 1305 U/I (981–1.697, n = 35), on day 3: 1210 U/l (735–1591, n = 16) vs. 1155 U/l (786–1.360, n = 36) and on day 7: 1063 U/l (839–1.391, n = 14) vs. 1076 U/l (856–1.496, n = 34)).