Used to measure glucokinase (GCK) enzyme activity in human biological samples such as serum, plasma, or tissue extracts. This ELISA kit is commonly applied in diabetes research to assess pancreatic beta-cell function and insulin regulation. It helps in studying metabolic disorders, drug development for glucose homeostasis, and evaluating the impact of genetic mutations on GCK activity. The assay enables high-throughput, quantitative analysis, making it valuable in clinical labs and pharmaceutical research.