Used in immunological research to detect and quantify interleukin-1 levels in rat samples. Enables study of inflammatory responses, immune system activation, and disease mechanisms in experimental models. Commonly applied in preclinical studies related to arthritis, sepsis, neuroinflammation, and autoimmune disorders. Supports evaluation of drug efficacy and toxicity by monitoring cytokine changes during treatment. Provides high sensitivity and specificity for accurate measurement in serum, plasma, and cell culture supernatants.