A Complete Blood Count (CBC) checks your white blood cell count, red blood cell count, hemoglobin, hematocrit, platelet count, lymphocytes, monocytes, neutrophils, and eosinophils. An abnormal CBC result can mean many things and your doctor may want additional testing, in conjunction with a physical exam, to determine why your results are out of range:
- Abnormal white blood cell count could mean that you have a virus, so your doctor could ask you to get a strep test or a test for mononucleosis. There is also a chance you may have inflammation so your doctor may want a Sedimentation Rate (ESR) or C-Reactive Protein (CRP) test to help pinpoint the issue.
- An out of range red blood cell count mean may warrant a vitamin B12 and folate, and/or a reticulocyte test to determine if there is anemia
- Abnormal platelet results may require you to get tests to further assess your platelet count such as a platelet function test. There is also a probability that you have a bleeding or excessive clotting disorder