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Carcinoembryonic antigen (CEA) describes a set of highly-related glycoproteins involved in cell adhesion. CEA is normally produced in gastrointestinal tissue during fetal development, but the production stops before birth. Consequently, CEA is usually present at very low levels in the blood of healthy adults (about 2–4 ng/mL). [2]
Carcinoembryonic antigen-related cell adhesion molecule 1 (biliary glycoprotein) (CEACAM1) also known as CD66a (Cluster of Differentiation 66a), is a human glycoprotein, and a member of the carcinoembryonic antigen (CEA) gene family.
The reason is that the test may be falsely normal (false negative) in many cases or abnormally elevated in people who have no cancer (false positive) in others. The main use of CA19-9 is therefore to see whether a pancreatic tumor is secreting it; if that is the case, then the levels should fall when the tumor is treated, and they may rise ...
Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry"), the ...
Pregnancy-specific beta-1-glycoprotein is a major product of the syncytiotrophoblast in the placenta, reaching concentrations of 100 to 290 mg/L at term in the serum of pregnant women. [ 3 ] [ 12 ] PSGs are synthesized through a gene's coding for a specific protein.
CA 242 is a tumor marker for sialylated Lewis carbohydrates associated with adenocarcinomas and e-selectin-mediated metastatic risk. [1] [2] [3] It is commonly tested along with CEA, CA19-9, and CA242 for detecting pancreatic cancer. [4]
The alpha-1 fraction does not disappear in alpha 1-antitrypsin deficiency, however, because other proteins, including alpha-lipoprotein and orosomucoid, also migrate there. As a positive acute phase reactant, AAT is increased in acute inflammation. [citation needed] Bence Jones protein may bind to and retard the alpha-1 band. [citation needed]
Tumor-associated glycoprotein 72 (TAG-72) is a glycoprotein found on the surface of many cancer cells, including ovary, [1] [2] [3] breast, colon, [4] lung, and pancreatic cancers. [ 5 ] [ 6 ] It is a mucin -like molecule with a molar mass of over 1000 kDa .