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Interpret Your CD4+ T Cell Count Results

Enter your CD4 value below and get an instant, free AI interpretation — a plain-English explanation checked against WHO/IFCC reference ranges.

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This AI-generated interpretation is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Results may vary based on individual health factors not captured here.

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CD4+ T Cell Count Normal Ranges

CD4+ T cells (helper T cells) are the primary target of HIV.

Age GroupReference RangeUnitNotes
Adults (18–64)500 – 1500cells/µLNormal immune function
All ages200 – 499cells/µLModerate immunosuppression

Also reported in: cells/mm³.

Critical (Panic) Values

Critical Low: < 200 cells/µL. Values outside these limits require immediate clinical attention.

Common Causes of High CD4

Effective antiretroviral therapy (ART) restoring immune functionIn HIV-negative individuals: normal immunological variation, infections (reactive lymphocytosis)

Common Causes of Low CD4

HIV infection (progressive CD4 depletion)AIDS (CD4 <200 cells/µL)Corticosteroid therapy (reduces CD4 counts transiently)

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