Used in neuroscience and pharmacological research to quantify rat orexin receptor 2 (OXR2) levels in biological samples such as brain tissue homogenates, cerebrospinal fluid, or cell culture lysates. Enables investigation of the orexin system’s role in sleep-wake regulation, particularly in narcolepsy and other sleep disorders. Supports studies on drug development targeting OXR2, including evaluation of receptor expression changes in response to therapeutic compounds. Provides a reliable, sensitive, and specific method for high-throughput screening in preclinical research.