Used in biomedical research to detect and quantify low molecular weight cytokeratins in human biological samples such as serum, plasma, and tissue lysates. This ELISA kit is particularly valuable in cancer studies, where elevated levels of cytokeratin fragments serve as tumor markers, especially in epithelial-derived cancers like non-small cell lung cancer and breast cancer. It supports the assessment of disease progression, treatment response, and prognosis. The kit is also applied in monitoring epithelial cell damage in conditions such as liver disease, inflammatory disorders, and toxicology studies. Its high sensitivity and specificity make it suitable for use in clinical research and drug development settings.