Item Value
Test name B-Cell ImmunoCompetency Panel
Available Stat? No
Turn around times 2-3 days
In House Availability Monday - Thursday, day shift
Performed by Immunology
Normal range
Reference Range
%CD19+ of total lymphs 5.3 – 23.3
%CD20+ of total lymphs 4.8 – 22.0
%CD27+ of CD19+ B-cells 10.7 – 46.2
%CD27+/IgM+/IgD+ of CD19+ B-cells 1.6 – 23.1
%CD27+/IgM-/IgD- of CD19+ B-cells 4.8 – 24.9
%CD27+/IgM+/IgD- of CD19+ B-cells 0.5 – 6.2
%IgM+ of CD19+ B-cells 21.2 – 78.7
%CD38+/IgM- of CD19+ B-cells 0.5 – 5.4
%CD38+/IgM+ of CD19+ B-cells 1.0 – 8.1
%CD21+ of CD19+ B-cells 93.7 – 100.0
%CD21- of CD19+ B-cells 0.9 – 7.0


Note: Reference values are for ≥ 18 year olds. For pediatric ranges please see:
Piatosa, B, et al. 2010. B Cell Subsets in Healthy Children: Reference Values for Evaluation of B Cell Maturation Process in Peripheral Blood. Cytometry Part B (Clinical Cytometry) 788:372-381
Container type Lavender EDTA
Amount to Collect 3.0
Collection Instructions Do not draw samples for this test on Friday, weekends and UCSF observed holidays. Samples drawn on the day before holidays must be received in the lab by 12 noon.
Sample type Blood

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