Flow Cytometry - CD3 ( Pan T Cell Marker ) *
Also Known As
Test Parameters Included
- CD3 Positive T Lymphocyte Percentage and Absolute Count (cells/µL)
- Pathologist Immunophenotyping Remark – correlated with normal T-cell reference intervals
Department
Methodology
Sample Required
Preparation
Schedule Report
24-48 Hours
Emergency Report
Yes
Frequently Asked Questions
What does CD3 flow cytometry measure?
CD3 flow cytometry identifies and quantifies pan-T lymphocytes, which are essential for cell-mediated immunity. It reports both the percentage of CD3+ cells and the absolute T-cell count.
Is fasting required for this test?
No fasting is required. CD3 T-cell counts are not affected by recent food or fluid intake.
Why is this test prescribed?
It is used to evaluate immune status in recurrent infections, immunodeficiency disorders, autoimmune conditions, post-chemotherapy monitoring, and before starting immunosuppressive therapy.
How long does it take to get results?
Reports are typically available within 24–48 hours. Turnaround time may vary depending on lab workload.
What affects CD3 T-cell counts?
Recent infections, stress, corticosteroid use, chemotherapy, and certain autoimmune diseases can temporarily lower or alter T-cell counts.
How is the sample collected and handled?
Blood is drawn into an EDTA or Heparin tube. The sample must be kept at room temperature and processed within 24 hours to ensure accurate flow cytometry results.
Test Description
Test Code
FCM17
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