This test provides a deeper look into the cause of an infection. While a 'culture' identifies bacteria, Pus for Cytology examines the types of cells in the sample (like neutrophils). This helps your doctor understand the nature of the inflammation—is it a new infection, a chronic issue, or is a fungus involved? A sample of the pus is collected by your doctor. This test provides a more complete picture of what's happening at the infection site, guiding a more targeted treatment.