RN Nursing · Pathophysiology · Practice question
Finding lymphocytes more abundant than monocytes in a differential blood cell count is considered normal.
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✓
True
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False
Answer & explanation
Correct: True
This statement is true. In a normal differential white blood cell count, lymphocytes are indeed more abundant than monocytes. The normal differential count reflects the relative percentage of each leukocyte type. Neutrophils are the most abundant, comprising approximately 55 to 70 percent of all white blood cells. Lymphocytes are the second most common, representing about 20 to 40 percent of the differential. Monocytes follow at approximately 2 to 8 percent, making them considerably less numerous than lymphocytes. Eosinophils comprise 1 to 4 percent and basophils represent less than 1 percent. Lymphocytes include T cells, B cells, and natural killer cells, all of which are central to adaptive immune responses. Monocytes, by contrast, are the precursors to tissue macrophages and dendritic cells, playing roles in phagocytosis and antigen presentation. Because lymphocytes normally outnumber monocytes by a substantial margin, finding a higher proportion of lymphocytes relative to monocytes in a differential count is entirely expected and within normal parameters. Recognizing normal differential values is important for identifying abnormalities such as lymphocytosis seen in viral infections, lymphopenia in immunodeficiency states, or monocytosis associated with chronic inflammatory conditions and certain infections.
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