This private immunology blood test measures CD25 (the alpha chain of the interleukin-2 receptor) on lymphocytes. The catalogue test price is £118.13 plus a £50 phlebotomy fee, with results normally available in 2 days.
Because lymphocyte surface markers require fresh whole blood for flow cytometry analysis, we recommend attending on a weekday morning or early afternoon.
Written by Mr Stephen Lingam. Reviewed by Dr Scott Pereira (GMC 1524080) on 18/10/2026.
It measures expression of CD25 (interleukin-2 receptor alpha chain) on white blood cells using laboratory immunophenotyping.
Flow cytometry tests require fresh EDTA blood to reach the laboratory promptly, so Monday to Thursday appointments before mid-afternoon are ideal.
No fasting is required before your appointment.
Yes. You can add CD25 and other immunology markers to the same booking at 117a Harley Street and pay a single £50 phlebotomy fee.