Item Value
Test name Lymphocyte subsets
Available Stat? No
Turn around times 2-3 days
In House Availability Monday-Saturday (day shift)
Performed by Immunology
Normal range
Subset Percentage Absolute
CD3 (T) Cells 55-88% 715-2431 x106 cells/L
CD4 (helper-inducer) T Cells 24-64% 440-1496 x106 cells/L
CD8 (cytotoxic-suppressor) T Cells 14-40% 270-918 x106 cells/L
CD19 (B) Cells 6-22% 140-476 x106 cells/L
CD56 Natural Killer (NK) cells 3-29% 160-544 x106 cells/L

CD4/CD8 (H/S) Ratio: 0.7-3.9

Note: Reference values are for ≥ 18 year olds. For pediatric ranges please see:

Kotylo, PA, et al. 1993. Reference ranges for Lymphocyte Subsets in Pediatric Patients. Am. J. Clin. Pathol 100:111-115

Lin, S-C., et al. 1998. Age-Related Changes in Blood Lymphocytes of Chinese Children. Ped. Allergy Immunol. 9:215-220

Melaranci, C., et al. 1992. T. Cell Subpopulations in Pediatric Healthy Children: age-normal values. J. Clin. Lab. Immunol. 30:143-149
Container type Lavender top
Amount to Collect 3 mL blood
Sample type EDTA whole blood

If you have additional questions regarding this test, please call: 415-353-1667