A Urine Culture and Sensitivity test is the definitive method for diagnosing a Urinary Tract Infection (UTI). This two-part test first involves 'culturing' a urine sample (collected in a sterile 'clean-catch' cup) to see if bacteria grow. If significant bacteria are found, the 'sensitivity' portion is performed. This exposes the specific bacteria to various antibiotics to determine which medication will be most effective at eliminating the infection. This test is crucial not only for diagnosing a UTI but for guiding your physician in prescribing the correct antibiotic, ensuring a fast recovery and preventing antibiotic resistance.