Used in biomedical research to quantify human gastric mucin levels in biological samples such as gastric fluids, tissue homogenates, and cell cultures. Helps assess gastric mucosal health and function in studies related to gastrointestinal diseases including gastritis, peptic ulcers, and gastric cancer. Supports investigation of mucin secretion in response to pathogens like Helicobacter pylori and evaluates the effects of drugs, probiotics, or anti-inflammatory agents on mucosal protection. Commonly applied in preclinical research and clinical diagnostics to understand mucosal defense mechanisms and disease progression.