The percentage of CD4 positive lymphocytes is determined by flow cytometry using staining with fluorescent-tagged antibodies against CD3 and CD4 followed by whole blood RBC lysis
What calculations does the dual platform use to determine the absolute number of CD4 positive cells?
a. Absolute CD4 count x 100
b. Number of CD4+ cells x 100
c. Absolute lymphocyte count x % CD4+ lymphocytes/100
d. % lymphocytes x % CD4+ lymphocytes/100
Correct Answer: C
Health Professions
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