This disclosure provides a method for improving the efficiency and timing of detecting whether sepsis-related microorganisms are present in a fluid sample. The method comprises the steps of: collecting the fluid sample from a patient; fractioning the fluid sample to isolate a quantity of microorganism cells; extracting a portion of the microorganism cells from the fluid sample; lysing a portion of the microorganism cells extracted from the fluid sample to extract microorganism DNA; amplifying the microorganism DNA from the microorganism cells from a predetermined set of DNA primers to determine whether sepsis-related microorganisms are present within the fluid sample.