After birth, levels drop way down. Healthy adults have a very low level, but some types of cancer can cause it to rise. Your doctor can use CEA as a “marker” to learn more about your cancer.

[20] In conclusion, compared with the established marker CEA, Tumor M2-PK seems superior for the detection of colorectal cancer, especially in a nonmetastatic stage of the disease. A combination ...

Subsequent tests, including an elevated CEA tumour marker and a biopsy, confirmed the presence of primary lung cancer. Further staging scans showed that the cancer had not spread, allowing the ...