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CD 4/8 ASSAY

Synonym(s):
Lab Section Category
View write-up
Specimen Required

​3 mL EDTA blood

Method

​Flow Cytometry

Reference Interval / Value

Cell markers Unit  ≤ 50 years  > 50 years
 CD 4 % 28.2 – 50.7 29.8 – 52.3 
 CD 4 absolute # X109/L   288 – 1507  256 – 1594
 CD  8 % 12.5 – 38.5 8.8 – 38.6
 CD 8 absolute #  X109/L  148 – 1039  59 – 1034
 CD 4/CD 8 ratio   0.7 – 2.5  0.7 – 2.5
Turnaround Time

​1 – 2 days

Day(s) Test Set up

​Monday – Saturday

Last Updated - 13 Jun 2025