Used in biomedical research to quantify human thioredoxin reductase (TrxR) levels in cell lysates, tissue extracts, and biological fluids. Enables assessment of redox status in studies related to oxidative stress, cancer, inflammation, and neurodegenerative diseases. Supports drug development by monitoring TrxR expression changes in response to therapeutic compounds. Provides a reliable, high-throughput method for enzyme activity and protein expression analysis in clinical and experimental settings.