Used in neuroscience and pharmacological research to quantify dopamine D1 receptor levels in rat tissue samples, particularly in brain regions associated with motor control, cognition, and reward pathways. Enables researchers to study receptor expression changes in models of neurological disorders such as Parkinson’s disease, schizophrenia, and addiction. Supports evaluation of drug effects on dopaminergic signaling by providing a reliable method to measure D1 receptor protein concentration in experimental and control groups. Widely applied in preclinical studies to assess therapeutic interventions targeting the dopaminergic system.