Used to measure glutaminase (GLS) enzyme activity in mouse biological samples such as tissue lysates, cell extracts, or serum. This ELISA kit enables researchers to quantify GLS levels in studies related to cancer metabolism, neurological disorders, and kidney function, where glutaminase plays a key role in glutamate production and energy metabolism. The assay is useful in preclinical research for evaluating metabolic changes in disease models or in response to therapeutic interventions. It provides a sensitive and specific method for high-throughput analysis in life science and pharmaceutical research.