Facility for the biological, microbiological, serological, chemical, immuno-hematological, hematological, biophysical, cytological, pathological, or other examination of materials derived from the human body for the purpose of providing information for the diagnosis, prevention, or treatment of any disease or impairment of, or the assessment of the health of human beings.

A complete blood count, or CBC, is an easy and very common test that screens for certain disorders that can affect your health. A CBC determines if there are any increases or decreases in your blood cell counts. Normal values vary depending on your age and your gender. Your lab report will tell you the normal value range for your age and gender. A CBC can help diagnose a broad range of conditions, from anemia and infection to cancer.

Getting ready for a CBC.

Make sure to wear a short-sleeved shirt or a shirt with sleeves that you can easily rollup. You can typically eat and drink normally before a CBC. However, your doctor may require that you fast for a specific amount of time before the test. That’s common if the blood sample will be used for additional testing. Your doctor will give you specific instructions.