A throat swab is a medical procedure used to collect a sample from the back of the throat. This sample is often tested for infections, such as strep throat, caused by the bacterium Streptococcus pyogenes. The procedure involves using a sterile swab to gently rub the throat area, which helps gather cells and bacteria for analysis. Throat swabs are commonly performed in clinics and hospitals. Results from the test can help doctors determine the appropriate treatment, such as antibiotics if a bacterial infection is present. This simple test is quick and can provide valuable information about a patient's health.