Learn about medical tests, including what the tests are used for, why a doctor may order a test, how a test will feel, and what the results may mean. Medical tests can help detect a condition, determine a diagnosis, plan treatment, check to see if treatment is working, or monitor the condition over time. A doctor may order these tests as part of a routine checkup, to check for certain diseases and disorders, or to monitor your health.
Laboratory tests are among the most common and important tools of modern medicine. Results from clinical laboratory tests contribute to the majority of health care decisions. They provide information about your health status and risk factors and can be used to determine a diagnosis, guide therapy, and estimate outlook (prognosis). Many of the decisions you and your health care provider make about your care are based on results of laboratory tests.
There are a few reasons why a test may be repeated. For example:
There are many factors that determine the cost of a lab test, including the type of test, where the test is performed, and if you have insurance coverage. When prescribed by a doctor, testing is often covered if you have insurance, but you may still have a copay or deductible. There can also be fees charged by the technicians who draw your blood. Point-of-care testing at health fairs is usually done at no charge or very low-cost. Check with your doctor and insurance plan about the cost of your test. If you plan to order testing through our Shop, you can view the total cost of the test before purchasing.