STI testing refers to the process of checking for sexually transmitted infections. It typically involves a healthcare provider taking samples, such as blood, urine, or swabs from the genital area, to identify any infections. Regular testing is important for sexually active individuals, as many STIs can be asymptomatic, meaning they show no symptoms. Getting tested can help prevent the spread of infections and ensure timely treatment if needed. Most healthcare facilities offer STI testing services, and many are confidential or anonymous. It's recommended to discuss testing options with a healthcare provider to determine the best approach for individual needs.