Soluble interleukin-2 receptor(IL-2R) CLIA kit (Chemiluminescence Immunoassay) is an in vitro diagnostic quantitative test kit. Interleukin-2 (IL‑2) stimulates an immune response on target cells via a high affinity receptor (IL-2R) composed of alpha, beta and gamma subunits. IL-2R is an important disease marker in hemophagocytic lymphohistiocytosis, serum slL-2Ra levels have been found to be elevated in most types ofhematolymphoid neoplasms.