CEA blood analysis

Carcinoembryonic antigen is one of the proteins found in the tissues of the fetus whose levels disappear or are severely reduced after birth naturally. It is also considered one of the tumor markers, which is one of the substances produced by cancer cells In response to the presence of cancer cells in the body, the level of this protein increases in many cancerous disorders, in addition to some non-cancerous disorders. In fact, the level of this protein is usually checked in the blood, and sometimes in various body fluids such as: cerebrospinal fluid The peritoneal fluid lining the stomach wall, and the pleural fluid surrounding the lungs.[1]

Indications for a CEA analysis

The CEA test is not used to diagnose or detect cancers in the general public, nor for people who have no symptoms, but it is usually used after diagnosis of one of the types of cancers that produce this protein, including: lung, liver, ovarian, and prostate cancer, And others, and this analysis is carried out in the following cases:[2]

  • Symptoms that indicate cancer.
  • Monitor the effectiveness of treatment used to get rid of cancer, such as chemotherapy, radiation, surgery, or a combination of them.
  • Monitoring the patient after treatment is completed to check for cancer recurrence.
  • Screening for cancer in people at high risk of developing it, such as people who have a family and hereditary history of colon cancer, and in fact, it is rarely used for this.

Analysis of the results

CEA is used to help monitor people with many cancers. In fact, this test is not useful in monitoring cancers that do not produce this protein. The analysis of the results of the cancer antigen test can be stated as follows:[3]

  • Treatment monitoring test: Low levels of CEA after treatment indicate that the cancer has been successfully treated.
  • Cancer recurrence surveillance test: Elevated CEA levels after treatment are the first sign of tumor recurrence.
  • Cancer staging test: A slightly elevated CEA level usually indicates the early stages of the disease, while a significantly elevated CEA level usually indicates an advanced stage or spread to other parts of the body.
  • Other results: In fact, an elevated CEA protein level does not always indicate cancer. There are many non-cancerous disorders that cause an elevated protein level, and these disorders include the following:[4]
  • pancreatitis.
  • Liver and lung diseases.
  • infection.
  • bedsores;
  • Chronic obstructive pulmonary disease (in English: Chronic obstructive pulmonary disease).
  • Breast cysts.
  • Inflammatory bowel diseases.
  • smoking.

the reviewer

  1. ↑ “CEA Test”, medlineplus.gov, 12-3-2019, Retrieved 2-6-2019. Edited.
  2. ↑ Jacquelyn Cafasso (30-3-2017), “What is a carcinoembryonic antigen test (CEA)?”, www.healthline.com, Retrieved 2-6-2019. Edited.
  3. ↑ “Carcinoembryonic Antigen (CEA)”, labtestsonline.org, 5-1-2019, Retrieved 2-6-2019. Edited.
  4. ↑ Laura J. Martin (12-8-2018), “What Is the CEA Test?”, www.webmd.com, Retrieved 2-6-2019. Edited.

What is a CEA blood test?

Writing – on the date : – Last updated: 2022-05-14 03:51:01