Quick highlights
- Measures absolute CD4 helper T-cell count via flow cytometry
- Key marker for immune status monitoring in HIV care (with viral load)
- Useful for tracking trends over time under clinician guidance
- No fasting; EDTA blood sample
- Counts can vary with infections, stress, time of day—trend matters
- Often paired with CD8 and CD4/CD8 ratio for fuller picture
- Supports clinician decisions on prophylaxis and monitoring when relevant
- Home blood collection available in many service areas
- Clear advice against self-adjusting medicines
- SEO coverage: CD4 absolute count test, CD4 T cell count, HIV monitoring CD4
What’s included
Preparation
- Book blood draw (home or lab)
- No fasting required
- If monitoring, test at similar time/day when possible
- Disclose recent infections, vaccines, and steroid/immunosuppressive use
- Collect EDTA blood sample via trained phlebotomist
- Download report from <a href='/my-account/'>View reports</a>
- Review with clinician alongside viral load and other markers
- Follow clinician schedule for repeat monitoring
FAQs
It measures the number of CD4 helper T-cells per microliter of blood, usually by flow cytometry.
No.
Yes, commonly along with viral load to assess immune status and treatment monitoring.
Yes. Infections, stress, and timing can affect counts; trends over time are more meaningful.
No. Clinicians use viral load, symptoms, and other labs along with CD4.
EDTA whole blood.
Often same day or within 24 hours.
Yes in many serviceable areas for blood draw.
Steroids and immunosuppressants can influence lymphocyte counts; disclose medications.
Ranges vary by lab and population; your report will include reference intervals.
Do not stop medicines unless your clinician instructs.
Yes, in selected immunology evaluations under specialist care.
Download from <a href='/my-account/'>View reports</a>.
To monitor immune status trends and response to therapy under clinician guidance.
Notes
CD4 values vary with infections and medications.
