White Blood Cell Differential
Also known as: Differential leukocyte count, Peripheral differential, White blood cell morphology, WBC differential, Diff
The white blood cell (WBC) differential is used to evaluate the distribution and morophology of WBCs, providing more specific information about a patient's immune system than the WBC count alone.WBCs are classified as one of five major types of leukocytes - neutrophils and monocytes - and the percentage of each type is determined. ho differential count is the percentage of each type of WBC in the blood. The total number of each type of WBC is obtained by multiplying the percentage of each type by the total WBC count
High levels of these leukocytes are associated with various allergic diseases and reactions to parasites. An eosinophil count is sometimes ordered as a follow-up test when an elevated or depressed eosinophillevel is reported.
Procedure and posttest care
For normal values for the five types of WBCs classified in the differential for adults and children. For an accurate diagnosis, differential test results must always be interpreted in relation to the total WBC count.
Abnormal differential patterns provide evidence for a wide range of disease states and other conditions
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