Question

multiple choice question
what is the purpose of a differential wbc count?

to determine the number and ratio of each type of leukocytes in a sample

to determine the number of rbcs and wbcs in a sample

to determine the number of rbcs in a sample

to determine the number of rbcs, platelets and wbcs in a sample

Explanation:

A differential WBC (white blood cell) count focuses on analyzing leukocytes (WBCs). The first option states it determines the number and ratio of each type of leukocytes, which matches the purpose. The other options involve RBCs (red blood cells) or platelets, which are not the focus of a differential WBC count.

Answer:

A. To determine the number and ratio of each type of leukocytes in a sample