A blood draw for a stomach test may be able to detect liver disease, but it is not a specialized test and is not comprehensive. Before the stomach examination, it is often necessary to do some pre-test preparations, including some routine tests, such as routine blood tests, preoperative eight items, and so on. Preoperative eight can clarify whether the patient has viral hepatitis, but the specific liver problems need to improve the liver function test to be able to check whether the patient has liver function abnormalities, mainly through the value of alanine aminotransferase, glutamic oxaldehyde aminotransferase values for preliminary diagnosis. At the same time, blood tests are not always able to detect liver diseases, such as liver cysts, liver hemangiomas, etc., and often need to be combined with other tests. If you suspect liver disease, you should go to the hospital in time and cooperate with the doctor to do relevant examinations.