Used in biomedical research to quantify levels of the CYP1A2 enzyme in human tissue or serum samples. Helps assess liver function and metabolic activity, particularly in studies involving drug metabolism, environmental toxin exposure, and pharmacogenomics. Widely applied in preclinical studies to evaluate enzyme induction or inhibition by new drug candidates. Supports research into inter-individual variations in drug response and helps identify potential drug-drug interactions. Also utilized in toxicology to monitor CYP1A2 expression changes due to pollutants like polycyclic aromatic hydrocarbons.