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Immunology

CD4 T-cells (absolute)

How many CD4 helper T-cells are circulating in each microlitre of blood.

Unit /µLTypical adult range 450–1400 /µL
What it is

How many CD4 helper T-cells are circulating in each microlitre of blood.

Why it matters

It is the number immune status is usually judged on, and the one that treatment decisions rest on where it matters.

Reading the number

It is calculated from three measurements -- the white count, the lymphocyte percentage and the CD4 percentage -- so it swings more than the percentage does. Values fall through the day and after any acute illness.

What moves it
time of dayrecent infectionsteroid medicationrecent intense exercise
Read alongside
CD4 T-cells (%)CD8 T-cells (absolute)CD4/CD8 ratio
When to raise it

Worth discussing a downward trend held across several tests, rather than any single low value.

Tracking only, not a diagnosis. The range above is a typical adult reference range — the range printed by the lab that ran your test is the one that applies to you. Discuss anything that concerns you with your doctor.

Also known as

On a report in another language.

A lab report names this analyte in its own language. Vitals Vault recognises each of these and files them all under CD4 T-cells (absolute).

T4 [CD3/CD4] absolutoCD4 absolutoCD4 count

Track your cd4 t-cells (absolute) over time.

CD4 T-cells (absolute) is one of 165 analytes Vitals Vault charts over time. Import a lab report in any language and this number lands on a timeline only you can read.

Continue with Google
Tracking only. This app is not medical advice. Always discuss results and future analysis with your doctor.

Catalog entry last updated 2026-08-28. Browse all 165 metrics.