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CD3+CD4+ (T4 helper) 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

20 published ranges, each from a named source
16 y – 64 y
430–1800 cells/µL
65 y+
490–1600 cells/µL
Ranges from ARUP Laboratories Test Directory.

All source ranges (20)
SourceSexAgeRange
American Board of Internal Medicine (Laboratory Test Reference Ranges) All all ages 530–1570 /µL
ARUP Laboratories Test Directory All ≤ 6 d 1000–4800 cells/µL
ARUP Laboratories Test Directory All 7 d – 30 d 1500–6000 cells/µL
ARUP Laboratories Test Directory All 2 mo – 4 mo 1600–6500 cells/µL
ARUP Laboratories Test Directory All 5 mo – 8 mo 1000–7200 cells/µL
ARUP Laboratories Test Directory All 9 mo – 1 y 1300–7100 cells/µL
ARUP Laboratories Test Directory All 1 y – 2 y 400–7200 cells/µL
ARUP Laboratories Test Directory All 2 y – 4 y 500–2700 cells/µL
ARUP Laboratories Test Directory All 5 y – 9 y 400–2500 cells/µL
ARUP Laboratories Test Directory All 10 y – 15 y 400–2100 cells/µL
ARUP Laboratories Test Directory All 16 y – 64 y 430–1800 cells/µL
ARUP Laboratories Test Directory All 65 y+ 490–1600 cells/µL
Mayo Clinic Laboratories (Pediatric Test Catalog) Female 30 d – 17 y 170–1007 cells/mcL
Mayo Clinic Laboratories (Pediatric Test Catalog) Female 30 d – 17 y 582–1630 cells/mcL
Mayo Clinic Laboratories (Pediatric Test Catalog) Female 18 y – 70 y 42–832 cells/mcL
Mayo Clinic Laboratories (Pediatric Test Catalog) Female 18 y – 70 y 457–1766 cells/mcL
Mayo Clinic Laboratories (Pediatric Test Catalog) Male 30 d – 17 y 153–1745 cells/mcL
Mayo Clinic Laboratories (Pediatric Test Catalog) Male 30 d – 17 y 50–926 cells/mcL
Mayo Clinic Laboratories (Pediatric Test Catalog) Male 18 y – 70 y 42–399 cells/mcL
Mayo Clinic Laboratories (Pediatric Test Catalog) Male 18 y – 70 y 290–1175 cells/mcL
details
Sample
Whole blood · LOINC
Part of
T-cell helper (CD4) subset panel · T-cell subsets CD4 and CD8 panel
Code
LOINC 24467-3 · /µL
Also known as
CD3 Cells, Cell, Cellularity, Helper T cells, Inducer T cells
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