Carbohydrate Antigen 72-4 (CA 72-4), Serum


CA 72-4 is a high-molecular weight mucin glycoprotein that is detectable in the sera of patients with a variety of gastrointestinal adenocarcinomas and carcinomas of the ovary. CA 72-4 is not expressed
by non-epithelial tumours such as melanomas, sarcomas, tumours of neural crest derivation, leukaemia and lymphoma and is only weakly expressed in malignant mesotheliomas.


CA 72-4 is a reliable marker in gastric cancer. Postoperative serial sampling of CA 72-4 may facilitate early identification of recurrences.

Sample Type, Quantity & Conditions

1 ml Serum Room Temperature

Special Precautions

Values obtained with different assay methods should not be used interchangeably. The same specimen, serum or plasma, should be used consistently when monitoring a patient. Avoid grossly hemolysed samples.

Normal Range

Up to 6.9 U/mL

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