Used in clinical and research settings to detect and quantify M2-Pyruvate Kinase (M2-PK) enzyme activity in human biological samples such as serum, plasma, and stool. This kit is particularly valuable in cancer diagnostics, as elevated levels of M2-PK are associated with various malignancies, especially colorectal cancer. It serves as a non-invasive tool for early cancer screening and monitoring of disease progression or recurrence. The assay helps differentiate between malignant and benign conditions by measuring the dimeric form of pyruvate kinase, which is preferentially expressed in rapidly dividing tumor cells. Widely used in oncology research and diagnostic laboratories for its sensitivity and specificity in detecting tumor metabolism changes.