CEA · high result
What does a high CEA mean?
Short answer
CEA (carcinoembryonic antigen) is a tumor marker used mainly to monitor known colorectal cancer, not to screen for it: smokers run higher baselines, and benign conditions — inflammatory bowel disease, cirrhosis, pancreatitis, lung infections, hypothyroidism — raise it modestly. A markedly high or rising CEA in someone with cancer history is followed up promptly; a mildly high value in a well smoker is usually smoking.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
When does this result need same-day care?
- A rising CEA in someone with a cancer history — contact the oncology team
What is the normal range for CEA?
- age 18+: 0.000 – 3.00 ng/mL
Can reflect colorectal cancer or other GI cancers. Smoking also raises CEA.
Full reference table, citations and testing options: CEA biomarker page.
What are the common causes of high CEA?
- Smoking (baseline up to ~5 ng/mL)
- Colorectal, pancreatic, gastric, lung, breast and other cancers
- Inflammatory bowel disease, cirrhosis, hepatitis, pancreatitis
- COPD, pneumonia, hypothyroidism
- Benign breast disease
What symptoms go with high CEA?
- None from CEA itself
What do clinicians usually check next?
- Repeat in 4–6 weeks; smoking history
- In cancer survivors: oncology review and imaging per surveillance plan
- In the general population: colonoscopy is the screening tool, not CEA
How do you recheck CEA?
Prices are cash-pay; every order adds one $6 lab processing fee. Physician authorization is included; no insurance or referral needed.
| Test or panel | Type | Price | Fasting | Results |
|---|---|---|---|---|
| Men's Cancer Screening Panel | Panel · 12 tests | $299.99 | Yes | 3–5 business days |
| Women's Cancer Screening Panel | Panel · 12 tests | $299.99 | Yes | 3–5 business days |
| CEA (Carcinoembryonic Antigen) | Test | $119.99 | No | 2–4 business days |
Common questions
Can CEA detect colon cancer early?
No — it is normal in many early cancers and high in many benign conditions, so guidelines don't use it for screening. Its value is tracking treated cancer.
Educational content, not a diagnosis. Lab results are one input; a clinician interprets them with your history and exam.