This test is a crucial investigation to find the source of a complicated or recurrent Urinary Tract Infection (UTI) in patients with a urinary catheter. While a urine culture identifies the 'what,' this test identifies the 'where.' After your Foley's catheter is removed, the tip is sent to our lab to be cultured. This determines if a "biofilm" of bacteria on the catheter itself is the root cause of the infection. This test is essential for your doctor to understand the full picture, helping to create a plan that not only treats the current infection but also prevents it from coming back.