Used in biomedical research to measure erythropoietin levels in human serum or plasma samples. Helps in studying conditions related to red blood cell production such as anemia, kidney disease, and bone marrow disorders. Commonly applied in clinical labs and research settings to evaluate erythropoietin response to hypoxia or therapeutic treatments. Supports diagnosis and monitoring of erythropoietin-related pathologies and aids in drug development involving erythropoiesis-stimulating agents.