Abcd8

The Absolute Count for CD8 test measures the total number of CD8-positive T lymphocytes (cytotoxic T cells) in a blood sample. CD8 cells are an important part of the immune system and help identify and destroy virus-infected cells, abnormal cells, and certain cancer cells. Performed using flow cytometry, this test provides valuable information about immune function and is commonly used in the evaluation of immunodeficiency disorders, HIV infection, autoimmune diseases, and for monitoring individuals undergoing immunosuppressive therapy or organ transplantation.

Who should get this test done?

This test may be recommended for individuals who:

●     Have recurrent or persistent infections requiring evaluation of immune function.

●     Are living with or being evaluated for HIV infection and need immune status monitoring.

●     Are suspected of having an immunodeficiency or immune-related disorder.

●     Are receiving immunosuppressive treatment or have undergone organ or stem cell transplantation.

●     Need detailed T-cell analysis as part of a comprehensive lymphocyte subset evaluation.

Why consider this test?

CD8 T cells play a crucial role in protecting the body by eliminating infected and abnormal cells. Changes in their absolute count can provide important insights into the functioning of the immune system. The Absolute Count for CD8 test helps healthcare providers assess immune health, investigate immune-related conditions, monitor disease progression, and evaluate the response to treatment. When interpreted alongside other lymphocyte subset tests, it contributes to a more complete understanding of an individual’s immune status.

More information

This test is performed on a blood sample using flow cytometry, an advanced laboratory technique that identifies immune cells based on specific surface markers. The CD8 marker is found on cytotoxic T lymphocytes, which are responsible for recognizing and destroying infected or abnormal cells. The test is often requested together with other lymphocyte subset markers, such as CD3, CD4, CD19, and CD16/CD56, to provide a comprehensive evaluation of immune system function. The findings are interpreted in conjunction with the patient’s clinical history and other laboratory investigations.

Other names

●     CD8 Absolute Count

●     Absolute CD8 T-Cell Count

●     Cytotoxic T-Cell Count

●     CD8 T-Lymphocyte Enumeration

●     CD8 Flow Cytometry Test