CA 72.4

CA 72.4 is a tumor-associated glycoprotein (TAG-72). Its elevated levels have been observed in certain types of cancers, particularly gastric (stomach) cancer. CA 72.4 (or CA 72-4) levels are typically increased in advanced stages of stomach cancer, especially when the cancer has spread to the surrounding lymph nodes. Thus, even though this test is not very useful in diagnosing early cancer, it helps check for cancer recurrence after treatment.