Pus Cells (Leukocytes) in Stool

The presence of Pus Cells (Leukocytes) in a stool sample is a significant indicator of intestinal wall inflammation. In a healthy digestive tract, white blood cells are typically absent or present in very low numbers. When found in significant quantities, it suggests that the immune system is responding to an insult in the gastrointestinal tract, most commonly caused by invasive bacterial infections (like Shigella, Salmonella, or Campylobacter) rather than viral pathogens. It is also a key marker in monitoring Inflammatory Bowel Disease (IBD) such as Ulcerative Colitis or Crohn’s Disease during flare-ups.