Carcinoembryonic Antigen (CEA)

Blood Health

A healthy result should fall into the range 0 - 3 ug/L.

Carcinoembryonic antigen (CEA) is a glycoprotein, which is present in normal mucosal cells but increased amounts are associated with adenocarcinoma, especially colorectal cancer. CEA therefore has a role as a tumour marker. Sensitivity and specificity are low, however, so it is of more use for monitoring than for screening or diagnosis.

CEA levels are useful in assessing prognosis (with other factors), detecting recurrence (especially for disease that cannot be evaluated by other means) and monitoring treatment in people with colorectal cancer. CEA is particularly recommended for postoperative follow-up of patients with stage II and III colorectal cancer if further surgery or chemotherapy is an option.

Single values of CEA are less informative than changes assessed over time.

Carcinoembryonic Antigen (CEA) result calculator

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