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www.medicinenet.com/carcinoembryonic_antigen/article.htm

Carcinoembryonic antigen (CEA) is used as a tumor marker. An elevated or rising CEA level indicates cancer progression or recurrence. Read on to learn about the meaning of different CEA blood ranges, the CEA test, and how to know what a healthy blood test range is for CEA.

www.rightdiagnosis.com/symptoms/elevated_cea/common.htm

Introduction: This information shows the various causes of Elevated CEA, and how common these diseases or conditions are in the general population.This is not a direct indication as to how commonly these diseases are the actual cause of Elevated CEA, but gives a relative idea as to how frequent these diseases are seen overall.. 1 disease that is "uncommon".

www.reference.com/health/causes-elevated-cea-f25db32e70324439

What Are the Causes of Elevated CEA? Elevated carcinoembryonic antigen is caused by conditions such as cancer, pancreatitis, smoking infections and cirrhosis of the liver. The normal level of CEA in an adult that does not smoke is 2.5 ng/ml, while normal level in a smoker is 5.0 ng/ml, according to MedicineNet.

www.ncbi.nlm.nih.gov/pmc/articles/PMC4954749

The causes of an elevated CEA level are listed in Table Table1 1. Table 1. Common causes for an elevated carcinoembryonic antigen (CEA) level. Lithium is a widely used in mood disorders. It has been associated with increased risk of nephrogenic diabetes insipidus, hypothyroidism, ...

cancerwall.com/cea-tumor-marker

High CEA levels are associated with advanced colorectal cancer therefore increased levels are a bad prognostic factor. CEA levels, together with other tumor markers are used for staging the cancer. It can assist in planning the treatment of the cancer. Biggest role for CEA tumor marker in colon cancer is monitoring the treatment.

www.medicotips.com/2014/07/dangerous-and-benign-causes-of-elevated.html

Cancerous and Benign Causes of Elevated CEA 125 Level. Dr Adil Ramzan. CEA 125 is an antigen that is expressed in the epithelial linings of the female genital tract, respiratory tract, cornea and conjunctiva. It is encoded by the MUC 16 gene (Mucin 16 Gene). MUC 16 protein (CEA), is a complex molecule, heavily glycosylated and easily water ...

www.healthline.com/health/cea

Elevated levels of CEA occur when the CEA is higher than 3 ng/mL. These levels are considered abnormal. People with many types of cancers can have levels that are higher than 3 ng/mL.

csn.cancer.org/node/298476

In regards to other things causing elevated cea, I'm aware that smoking can cause it to go as high as 6, and emphysema/COPD related problems can cause it to go as high as 10-12 max (according to a couple of Drs) yet my level has remained even higher than that for almost 3 years now, and no one has a clue as to what could be wrong and my ...

www.mayocliniclabs.com/test-catalog/Clinical+and+Interpretive/8521

CEA : Carcinoembryonic antigen (CEA) is a glycoprotein normally found in embryonic entodermal epithelium. Increased levels may be found in patients with primary colorectal cancer or other malignancies including medullary thyroid carcinoma and breast, gastrointestinal tract, liver, lung, ovarian, pancreatic, and prostatic cancers.

onlinelibrary.wiley.com/doi/pdf/10.3322/caac.21247

The data do not include the causes of falsely elevated CEA levels, but false-positive results have been observed in smokers and patients with various conditions, including nonmalignant gastrointestinal disorders, lung disease, and hypothyroidism. The authors state that these elevations are