White blood cells are also called leukocytes.
Platelets: A CBC will give the number of platelets present in the blood.
Interpreting Results
There are many reasons for doctors to check a CBC.

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Abnormal levels of cells in the blood duringchemotherapy is called bone marrow suppression.
NIH U.S. National Library of Medicine.CBC blood test.
2019;7(20):581. doi:10.21037/atm.2019.09.58
U.S. National Library of Medicine.