This culture grows oxygen-requiring (aerobic) bacteria from a clinical specimen — such as wound drainage, abscess fluid, tissue, or respiratory secretions — and identifies the organisms present. Susceptibility testing is then performed on significant isolates to guide antibiotic selection.
It is ordered to investigate suspected bacterial infection, evaluate non-healing wounds, work up fever of unknown origin, and direct therapy in patients who have failed empiric antibiotic treatment. Proper specimen collection — using sterile technique and the right transport medium — is essential for accurate results. Sample type depends on the suspected source of infection.