Used in neuroscience research to quantify dopamine D1 receptor levels in tissue or cell samples. Helps assess receptor expression changes in response to drugs, neurological disorders, or experimental treatments. Commonly applied in studies of addiction, Parkinson’s disease, schizophrenia, and cognitive function. Provides a reliable, sensitive method for measuring D1R protein concentration in brain regions like the striatum and prefrontal cortex. Supports high-throughput screening in drug development targeting dopaminergic pathways.