Screening tests are medical assessments used to identify potential health issues in individuals who may not show any symptoms. These tests help detect conditions early, allowing for timely intervention and treatment. Common examples include blood pressure checks, cholesterol tests, and mammograms for breast cancer. The goal of screening tests is to improve health outcomes by catching diseases at an earlier stage when they are often more treatable. Screening is typically recommended based on age, risk factors, and family history, ensuring that individuals receive appropriate evaluations, such as those for diabetes or colon cancer.