Patient Test Information

WBC Differential

The reference ranges provided here represent a theoretical guideline that should not be used to interpret your test results. Some variation is likely between these numbers and the reference range reported by the lab that ran your test. Please consult your doctor. For more information on reference ranges, please read Reference Ranges and What They Mean.

WBC diff Conventional Units2 SI Units3
Component Percentage
Absolute counts
(per microliter)
Mean number
Absolute counts X 109
per liter
Segs  56  1800-7800  0.56  1.8-7.8
Eos  2.7  0-450  0.027  0-0.45 
Baso  0.3  0-200  0.003  0-0.20 
Lymphs  34  1000-4800  0.34  1.0-4.8 
Monos  0-800  0.04  0-0.80 

1 from Henry's Clinical Diagnosis and Management by Laboratory Methods. 22nd ed. McPherson R, Pincus M, eds. Philadelphia, PA: Elsevier Saunders; 2011.

2 Conventional Units are typically used for reporting results in U.S. labs

3 SI Units are used to report lab results outside of the U.S.