A laboratory (lab) test is a procedure in which a health care provider takes a sample of your blood, urine, other body fluid, or body tissue to get information about your health. Lab tests are often used to help diagnose or screen for a specific disease or condition.Laboratory tests can help determine a diagnosis, plan treatment, check to see if treatment is working, or monitor the disease over time.
Hematology is the study of blood and blood disorders. Hematologists and hematopathologists are highly trained healthcare providers. They specialize in diseases of the blood and blood components. These include blood and bone marrow cells.
Clinical pathologists look at blood, urine, and other body fluid samples under a microscope, or with other diagnostic tools. They watch levels of certain chemicals or other substances in the body. A diagnosis or decision to do further study is then made based on the test results.