Learn about your laboratory tests, including what the lab test is used for, why your doctor ordered it, how the test will feel, and what the results may mean. A laboratory test checks a sample of blood, urine, other bodily fluid, or tissue to get more information about your health. Your doctor may order these tests as part of a routine checkup, to check for certain diseases and conditions or to monitor your health.
Use this test index to learn more about your lab tests.
Search for information on a variety of tests and procedures.