Classification l: coagulase coagulase positive staphylococcus coagulase negative staphylococcus, CNS S epidermidis S saprophyticus Coagulase: an important indicator of pathogenic staphylococcus coagulase positive staphylococcus S. aureus coagulase negative staphylococcus, CNS S. epidermidis S. saprophyticus Coagulase: an important indicator of pathogenic staphylococcus Classification II: coagulase