599093 Provided is method of method for detecting bacteria in a biological fluid of animal cells, the method comprising adding (i) a detergent for reducing the respiration of blood cells, and (ii) a bacterial growth promoter and measuring and/or detecting the level of glucose in the biological fluid over a period of time, wherein a decrease in the level of glucose indicates the presence of bacteria. The cells can be platelets and the detergent can be SPS.