A swab test is a medical procedure used to collect samples from a person's body, typically to test for infections or diseases. A small, soft stick with a cotton tip, known as a swab, is gently rubbed against the area of interest, such as the throat, nose, or skin. The collected sample is then sent to a laboratory for analysis. Swab tests are commonly used to diagnose conditions like COVID-19, influenza, and strep throat. They are quick and generally painless, providing valuable information to help healthcare providers determine the appropriate treatment for patients.