CD4 Absolute Count
- Sample Type
- Standard
- Fasting
- No
- Unit
- cells/µL
The CD4 Absolute Count measures the number of CD4+ T-helper cells in the blood, which are primary targets of HIV. In the context of a CD4 & CD8 Count panel, it is the gold standard for assessing immune competence. It is used to stage HIV infection, determine the risk of opportunistic infections (like Pneumocystis jirovecii), and monitor the effectiveness of Antiretroviral Therapy (ART). A declining count indicates progressive immune failure, while a rising count suggests immune reconstitution.
Check Your Result
Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
CD4 counts can fluctuate significantly due to diurnal variation (lower in the morning), acute non-HIV infections (like the flu), intense physical stress, or recent use of corticosteroids, which can lead to misleadingly low results.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for CD4 Absolute Count:
Official Sources
- CD4 Count - Testing.comTesting.com
Research & Guidelines
- PubMed: CD4 Absolute Count Clinical GuidelinesNCBI / PubMed
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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