Quick highlights
- Flow cytometry-based CD4 measurement for immune monitoring
- May include CD4 absolute and/or CD4 percentage depending on protocol
- Key in HIV care monitoring with viral load
- No fasting; EDTA blood sample
- Immune counts fluctuate—trend interpretation is essential
- Often paired with CD8 and CD4/CD8 ratio
- Useful for clinician decisions on monitoring/prophylaxis in relevant contexts
- Home blood collection available in many service areas
- Clear guidance to avoid self-adjusting medicines
- SEO coverage: CD4 count test, CD4 percentage test, HIV CD4 monitoring
What’s included
Preparation
- Book blood draw (home or lab)
- No fasting required
- Inform clinician about recent infections, vaccines, steroids
- Try to test at similar time/day for repeat monitoring
- Collect EDTA blood sample via trained phlebotomist
- Download report from <a href='/my-account/'>View reports</a>
- Review with clinician along with viral load and other markers
- Follow clinician monitoring schedule
FAQs
A measurement of CD4 helper T-cells in blood, commonly by flow cytometry.
No.
Yes, along with viral load to assess immune status and treatment monitoring.
The proportion of lymphocytes that are CD4 cells; sometimes reported alongside absolute count.
Clinicians consider both depending on context; trends and clinical scenario matter.
Yes; transient changes can occur—repeat monitoring helps.
EDTA whole blood.
Often same day or within 24 hours.
Yes in many service areas.
No. It is a monitoring marker used with clinical context.
No. Do not stop therapy unless your clinician instructs.
CD8 count, CD4/CD8 ratio, viral load (HIV), CBC.
Download from <a href='/my-account/'>View reports</a>.
To monitor immune status trends over time under clinician guidance.
Notes
CD4 count must be interpreted with viral load.
