Leukocyte esterase
Leukocyte esterase is a type of esterase enzyme released by white blood cells (leukocytes), particularly neutrophils, when they are activated or recruited to a site of infection or inflammation. Although the exact structure and biological function remains unclear, leukocyte esterase represents a type of biomarker for leukocytes and thus can be utilized as a screening or diagnostic tool for various clinical pathologies.