Carcinoembryonic Antigen (CEA)
- Sample Type
- Standard
- Fasting
- No
- Unit
- ng/mL
CEA is a glycoprotein involved in cell adhesion. While primarily associated with colorectal cancer, within an Ovarian Cancer Panel, it is utilized as a tumor marker to differentiate between primary ovarian malignancies (where CEA is typically low) and metastatic mucinous tumors originating from the gastrointestinal tract (where CEA is often elevated). It is also used to monitor the effectiveness of treatment and to screen for recurrence in patients with known mucinous ovarian carcinomas.
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Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
CEA levels are frequently elevated in heavy smokers and individuals with non-malignant conditions such as inflammatory bowel disease (IBD), pancreatitis, or liver cirrhosis. These benign elevations can lead to false-positive interpretations in the context of cancer screening.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for Carcinoembryonic Antigen (CEA):
Official Sources
- Normal CEA levels but still have colon cancer | Mayo Clinic ConnectMayo Clinic Connect
- CEA Test: MedlinePlus Medical TestMedlinePlus
- Carcinoembryonic Antigen (CEA) - Testing.comTesting.com
Research & Guidelines
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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