Print By Mayo Clinic Staff Request an appointment About Sept. 19, 2023 Print Show references Powers JM, et al. Approach to the child with anemia. https://www.uptodate.com/contents/search. Accessed April 29, 2023. Mean RT, et al. Diagnostic approach to anemia in adults. https://www.uptodate.com/contents/search. Accessed April 29, 2023. Types of blood tests. National Heart, Lung, and Blood Institute. https://www.nhlbi.nih.gov/health/blood-tests. Accessed April 29, 2023. Tefferi A. Diagnostic approach to the patient with erythrocytosis/polycythemia. https://www.uptodate.com/contents/search. Accessed April 29, 2023. Hoffman R, et al. The polycythemias. In: Hematology: Basic Principles and Practice. 8th ed. Elsevier; 2023. https://www.clinicalkey.com. Accessed April 29, 2023. Complete blood cell count (CBC) with differential, blood. Mayo Medical Laboratories. https://www.mayocliniclabs.com/test-catalog/overview/9109#. Accessed April 28, 2023. Complete blood cell count (CBC). American Academy of Family Physicians. https://familydoctor.org/complete-blood-count-cbc/. Accessed April 30, 2023. Pruthi RK (expert opinion). Mayo Clinic. May 1, 2023. Related Iron deficiency anemia Hematocrit testAbout PRC-20166984 Patient Care & Health Information Tests & Procedures Hematocrit test