Interleukin-6 (IL-6) is produced by monocytes, macrophages, and T cells and is invovled in many defense mechanisms including the immune response, hematopoiesis, bone metabolism, and acute phase reactions. Cayman's IL-6 (mouse) ELISA Kit is an immunometric (i.e., sandwich) ELISA that permits IL-6 measurements within the range of 23.4-1,500 pg/ml, with an LLOQ of approximately 23.4 pg/ml.