Used in biochemical and medical research to quantitatively measure levels of human β-mannosidase enzyme in biological samples such as serum, plasma, or tissue lysates. This ELISA kit is particularly valuable in studies related to lysosomal storage disorders, especially β-mannosidosis, a rare genetic condition caused by enzyme deficiency. It supports diagnosis, monitoring of disease progression, and evaluation of potential therapies in clinical and preclinical settings. The assay is also applied in cell biology research to investigate glycoprotein metabolism and lysosomal function.