complete blood count

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The determination of the quantity of each type of blood cell in a given sample of blood, often including the amount of hemoglobin, the hematocrit, and the proportions of various white cells.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A measure of the number, concentration, and size of white blood cells, platelets, and red blood cells in one's blood.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun counting the number of white and red blood cells and the number of platelets in 1 cubic millimeter of blood