Optimizing diagnosis of Bacillus cereus bacteremia using time to positivity: a retrospective observational study to differentiate true bacteremia from contamination

A cut-off value of 9.0 h can differentiate true B. cereus bacteremia from contamination, whereas a TTP > 13 h is indicative of contamination. Given its suboptimal diagnostic accuracy, TTP can help differentiate true B. cereus bacteremia from contamination but should be interpreted with clinical and laboratory data for the diagnosis of sepsis.