Screening
Screening is the use of tests, questionnaires, and other procedures to detect the presence of a particular condition, such as a disease, in individuals who may or may not have any signs or symptoms of the condition. It is an important step in the early detection, diagnosis, and treatment of many diseases. Screening tests are usually used in healthy individuals with no signs of disease and are usually less invasive than diagnostic tests, which are used to confirm a diagnosis when signs or symptoms of a condition are present. Common screening tests include mammography for breast cancer, Pap testing for cervical cancer, and cholesterol testing for cardiovascular disease. Screening has been shown to reduce mortality from many diseases and can be effective in improving the health of populations.
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