CD8, Flowcytometry Test: Booking, Price, and Results

The CD8, flowcytometry test measures the number and proportion of CD8+ T cells, a type of immune cell that targets and destroys infected or abnormal cells in the body. The test uses a laboratory technique called flow cytometry, which analyses thousands of cells rapidly and with high accuracy. Doctors commonly order this test to assess immune function, monitor HIV treatment, or investigate blood disorders. It is also known as the CD8 T-cell count test, CD8+ T lymphocyte count test, cytotoxic T-cell count test, or T-suppressor cell count test. This test requires whole blood and bone marrow samples.

A doctor may request the CD8, flowcytometry test for several reasons, ranging from routine immune monitoring to investigating a suspected blood disorder.

Common Symptoms That May Require This Test

The following symptoms may prompt a doctor to order this test:

• Frequent or recurring infections that do not resolve easily
• Unexplained fatigue lasting several weeks
• Swollen lymph nodes in the neck, armpits, or groin
• Persistent fever without a clear cause
• Unexplained weight loss
• Night sweats
• Chronic diarrhoea

Conditions This Test Can Help Detect

This test can help identify or monitor several conditions, including:

• HIV infection, where CD4 cells fall and CD8 cells may rise, affecting the CD4:CD8 ratio
• Post-transplant immune recovery following bone marrow transplant or immunotherapy
• Autoimmune diseases and chronic viral infections
• Leukaemia, where flow cytometry can identify and classify abnormal cell populations
• Primary immunodeficiency, including CD8 deficiency, which may cause recurrent respiratory infections

CD8, Flowcytometry Test for Chronic Disease Monitoring

In patients living with HIV or AIDS, CD8 cell counts are typically checked every three to six months to track disease progression and gauge how well antiretroviral therapy (ART) is working. The test is equally useful for patients receiving immunosuppressive therapy, helping doctors monitor immune recovery over time.

1. A trained staff member will review your clinical history and confirm the sample type required, either a blood sample or a bone marrow sample.
2. For a blood sample: A suitable vein in your arm is identified, the area is cleaned with an antiseptic, and a small sample of around 3 ml is drawn into a lavender-top EDTA tube.
3. For a bone marrow sample: The procedure is done at a medical facility. A local anaesthetic is given, and light sedation may be offered. A hollow needle is inserted through the skin into the hip bone to collect the liquid bone marrow (aspirate), typically 3 ml, into a sodium heparin or EDTA tube.
4. For both sample types, the collected sample is labelled carefully with your details.
5. The sample is stored at a refrigerated temperature of 2 to 8°C and promptly dispatched to the laboratory.
6. The sample is analysed using the flow cytometry method, and your report is prepared within 1 day.

Results from the CD8, flowcytometry test should always be reviewed alongside your clinical history. Below are the general reference ranges for healthy adults:

Disclaimer: These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.

These general wellness habits support a balanced immune system:

• Eat a varied diet with adequate vitamins and minerals, particularly vitamins C, D, and zinc
• Aim for regular, quality sleep and manage daily stress through relaxation or light exercise
• Avoid smoking and limit alcohol, both of which can impair immune function over time

1. Select the test on the Lupin Diagnostics website.
2. Choose your city and preferred centre location.
3. Visit the centre at your scheduled time for sample collection.
4. Receive your report via email or WhatsApp within the stipulated turnaround time.