The single most important laboratory test for determining the virulence of staphylococci is___________?
Correct answer: C. Detection of coagulase
- A. Mannitol fermentation
- B. Hemolysis of sheep erythrocytes
- C. Detection of coagulase
- D. The catalase test
Explanation
Coagulase converts fibrinogen to fibrin and helps Staphylococcus aureus form a protective clot, making coagulase the key laboratory marker associated with staphylococcal virulence. Catalase distinguishes staphylococci from streptococci but does not specifically indicate virulence.
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