Can tumor markers be checked after meals?

Tumor markers

are special proteins or substances that are present in or abnormally produced by malignant tumor cells, including serum carcinoembryonic antigen, alpha-fetoprotein, prostate specific antigen, etc. Tumor markers are generally not affected by diet, and postprandial examination usually does not affect the accuracy of test results, so blood tests can be taken after meals.

Tumor markers are abnormally elevated, and it is necessary to be alert to malignant tumors. Patients need further histopathological examination to confirm diagnosis.