Used in immunological research to quantify rat granulocyte macrophage colony stimulating factor (GM-CSF) levels in biological samples such as serum, plasma, cell culture supernatants, and tissue homogenates. This ELISA kit enables researchers to study immune responses, inflammation, and hematopoiesis in rat models. It is particularly useful in preclinical studies involving autoimmune diseases, infections, and cancer, where GM-CSF plays a key role in activating and differentiating granulocytes and macrophages. The assay provides high sensitivity and specificity, allowing accurate measurement of GM-CSF concentration to support mechanistic insights and therapeutic evaluation.