CD3

CD3 testing primarily looks at the levels of T cells in your blood through the CD3 protein marker. T cells are vital in fighting infections and regulating your immune responses. Monitoring these levels can help in assessing your immune system's functioning and overall health status.

This test is done primarily:

• To evaluate T cell levels in your blood
• To aid in diagnosing immune system disorders like T-cell deficiencies
• To monitor treatment effectiveness for conditions affecting the T cells
• To assess immune reconstitution after therapy
• To diagnose T-cell lymphomas or leukaemias

This test can be recommended under the following conditions:

• Suspected immune system disorders
• Monitoring during immunosuppressive therapy
• Diagnosis of T-cell lymphomas or leukaemias
• Following bone marrow or stem cell transplants for immune reconstitution evaluation
• Individuals with recurrent infections or unusual infections

• Abnormal Results and low CD3 levels may suggest immune system disorders, infections, or certain types of cancers.
• High levels could indicate conditions like acute viral infections, lymphomas, or leukaemias.

Consult your doctor for interpretation and further testing.

This test requires a blood sample.

During the test:

• A sample is collected using a needle inserted into a vein.
• The process is quick and relatively painless.
• Minimal discomfort might be experienced during blood draw.

There are no specific preparations required for the test. However, it is recommended that you consult with your healthcare provider before taking the test, as they may have specific instructions or recommendations based on your individual medical history and current health status.

Other tests include:

• Complete Blood Count (CBC): Assesses various blood components like red blood cells, white blood cells, and platelets.
• Flow Cytometry Immunophenotyping: Identifies different cell types based on their surface proteins.
• Bone Marrow Aspiration: Extracts bone marrow for examination to diagnose blood disorders like leukaemia.

• Cluster of Differentiation 3 Test
• T Lymphocyte Marker Test

T-cell deficiencies are conditions where the body lacks an adequate number of functioning T-cells, leading to increased susceptibility to infections, cancers, and autoimmune diseases due to a compromised immune system. Monitoring CD3 levels helps in diagnosing and managing these deficiencies effectively.