Used in biomedical research to quantify levels of Human Transferrin Receptor 1 (TFR1) in biological samples such as serum, plasma, and cell lysates. This ELISA kit enables researchers to study iron metabolism, cellular iron uptake, and TFR1 expression in various disease states including anemia, cancer, and neurodegenerative disorders. It is widely applied in immunology and oncology research to assess receptor dynamics in response to therapeutic agents or disease progression. The assay provides high sensitivity and specificity, making it suitable for monitoring TFR1 as a biomarker in clinical and preclinical studies.