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CD3+CD4+ (T4 helper) cells/cells

A CD4 count is a blood test that measures the number of CD4 cells in a sample of your blood. CD4 cells are a type of white blood cell that circulates throughout the body in the blood. They're also called CD4 T lymphocytes or "helper T cells." That's because they help fight infection by triggering your immune system to destroy viruses, bacteria, and other germs that may make you sick.

Source: MedlinePlus, U.S. National Library of Medicine

Normal range

19 published ranges, each from a named source
16 y – 64 y
32–64 %
65 y+
35–68 %
Female · 56 y+
6.4–27.7 %
Male · 56 y+
6.4–27.7 %
Ranges from ARUP Laboratories Test Directory, Mayo Clinic Laboratories (Pediatric Test Catalog).

All source ranges (19)
SourceSexAgeRange
ARUP Laboratories Test Directory All ≤ 6 d 26–62 %
ARUP Laboratories Test Directory All 7 d – 30 d 39–69 %
ARUP Laboratories Test Directory All 2 mo – 4 mo 37–69 %
ARUP Laboratories Test Directory All 5 mo – 8 mo 27–81 %
ARUP Laboratories Test Directory All 9 mo – 1 y 25–86 %
ARUP Laboratories Test Directory All 1 y – 2 y 16–91 %
ARUP Laboratories Test Directory All 2 y – 4 y 25–66 %
ARUP Laboratories Test Directory All 5 y – 9 y 26–61 %
ARUP Laboratories Test Directory All 10 y – 15 y 20–65 %
ARUP Laboratories Test Directory All 16 y – 64 y 32–64 %
ARUP Laboratories Test Directory All 65 y+ 35–68 %
Mayo Clinic Laboratories (Pediatric Test Catalog) Female 30 d – 17 y 25.8–68 %
Mayo Clinic Laboratories (Pediatric Test Catalog) Female 18 y – 25 y 6.4–51 %
Mayo Clinic Laboratories (Pediatric Test Catalog) Female 26 y – 55 y 6.4–41.7 %
Mayo Clinic Laboratories (Pediatric Test Catalog) Female 56 y+ 6.4–27.7 %
Mayo Clinic Laboratories (Pediatric Test Catalog) Male 30 d – 17 y 19.4–60.9 %
Mayo Clinic Laboratories (Pediatric Test Catalog) Male 18 y – 25 y 6.4–51 %
Mayo Clinic Laboratories (Pediatric Test Catalog) Male 26 y – 55 y 6.4–41.7 %
Mayo Clinic Laboratories (Pediatric Test Catalog) Male 56 y+ 6.4–27.7 %
details
Sample
Whole blood · LOINC
Part of
Immunodeficiency follow-up panel · Immunodeficiency panel · T-cell helper (CD4) subset panel · T-cell subsets CD4 and CD8 panel
Code
LOINC 8123-2 · %
Also known as
CD3 Cells, Cell, Cellularity, Helper T cells, Inducer T cells
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