Used in neuroscience and pharmacological research to quantify serotonin receptor 3 (5-HTR3) levels in biological samples. Enables investigation of receptor expression in response to drugs, neurological disorders, and psychiatric conditions such as anxiety, depression, and nausea. Commonly applied in studies involving drug development targeting 5-HT3 receptors, including antiemetics and neuroactive compounds. Supports high-throughput screening and validation of therapeutic agents in cell cultures and animal models. Provides a reliable tool for measuring receptor concentration in tissue homogenates, serum, or cell lysates with high sensitivity and specificity.