Urine stool pus culture tests are laboratory tests used to detect and identify the presence of bacteria or other microorganisms in the urine, stool, or pus samples of patients. The test is performed by taking a sample of the patients urine, stool, or pus and placing it on a special nutrient-rich culture medium to allow any bacteria or other microorganisms to grow. The growth of these microorganisms is then examined under a microscope to identify the specific type of bacteria or microorganism present, which helps in determining the appropriate treatment for the patient.