Lymphocyte Surface Marker Analysis

Test/Investigation

Lymphocyte Surface Marker Analysis

Site(s) or Laboratory offering Test/Investigation

NNUH

Units

10^9L

Also Known as/Frequency of Test

T cell count; CD3 (T), CD4 (T helper),CD8 (T cytotoxic) lymphocyte subsets; TBNK; CD4/CD8 count; B cell count; CD19 count; CD20 count, CD16+56 (NK) cells, CD34

Indications

Used for monitoring primary and secondary immunodeficiency. NB this test should not be used as a surrogate marker for HIV infection, CD4 count is often normal until late stage.

Comments/Precautions

MUST be received within 48hrs of venepuncture Store at room temp CD34’s are only assayed by prior arrangement with Haematology

Sample type

EDTA

Turnaround times (TAT) Urgent/Routine/GP or OPD

2 working days

Reference intervals (adult unless stated)

Please see issued report