Effect of polymyxin-sulphate preincubation on endotoxin recovery in the endotoxin activity assay. Samples from 15 intensive care unit patients with endotoxaemia ranging from 50 to more than 800 pg/ml were pretreated with polymyxin-sulphate at a concentration of 300 g/ml for 20 min at 37°C. Endotoxin concentrations are expressed as means ± standard deviation.
Marshall et al. Critical Care 2002 6:342 doi:10.1186/cc1522