Used in biomedical research to quantify levels of rat glycogen phosphorylase isozyme II in tissue samples and biological fluids. Helps assess myocardial damage in experimental models, particularly in studies involving heart injury or ischemia. Provides a sensitive and specific method for detecting GP-II release, which correlates with cardiac cell damage. Widely applied in preclinical drug development to evaluate cardiotoxicity and cardioprotective effects of compounds. Supports research in metabolic disorders, cardiovascular diseases, and toxicology.