Department of Laboratory Medicine


Hematology Division


Hematopathology Laboratory

Reference Ranges for Peripheral Blood Lymphocyte Populations

95% confidence intervals (from refs. 2,3 )

B Cells (CD19+ or CD20+)

 5-25%

Total T Cells plus NK Cells (CD2+)

 55-90%

Total T Cells (CD3+)

 60-85%

CD4+ T Cells

 30-60%

CD8+ T Cells

 15-50%

NK Cells (CD3-, CD16+ and/or CD56+)

 6-30%

CD4:CD8 Ratio

 0.6-2.8

 

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Last updated: 6/22/00

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