Autoimmune Activity Index - Activated Lymphocyte CD25 Surface Marker Test

Flow cytometry is a method used to assess the expression of CD25 (interleukin-2 receptor alpha-chain) protein on the surface of activated lymphocytes, particularly T cells and macrophages. CD25 is a marker of T cell activation and plays a central role in the immune response. It is used to evaluate autoimmune and allergic diseases, as well as some lymphomas.