CD4 Percentage & Absolute Count Test
- Category
- Immunity
- Sample
- Blood sample taken from a vein in your arm
- Reports () Terms & Conditions Report time varies with time of sample collection.
- In 4 days
- Fasting
- No Fasting
- Age
- 5+ Years
What Is This Test?
Measures the percentage and absolute number of CD4 T-helper cells, the immune cells targeted by HIV.
Why this test is performed?
Assesses immune strength in people living with HIV, helps decide on preventive treatment against infections and monitors response to antiretroviral therapy.
Who should take this test?
Recurrent or unusual infections, or monitoring of immune status — as advised by a doctor.
Test Preparation
No fasting needed.
What's included 3 parameters
Absolute Lymphocyte Count (1)
- Absolute Lymphocyte Count
Absolute CD4 (1)
- Absolute CD4
CD4 (Helper T cells) (1)
- CD4 (Helper T cells)
Medical disclaimer · for information only, not medical advice
This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.
In a medical emergency, call 112, or 108 for an ambulance where that service operates, or go to your nearest emergency department. If you are in mental health distress, Tele-MANAS is free and available 24×7 on 14416.
Read our Editorial Policy and Medical Review Process.
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Frequently asked questions
Usually about 500–1,500 cells per microlitre. Counts below 200 indicate significant immune weakness.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Blood sample taken from a vein in your arm.
Usually within 2–3 days after the sample reaches the lab. You will receive the report online.
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