Blood examination is one of the important means to detect early cancer, which can detect various tumor marker indexes, find and detect various malignant cancers. For example, when carcinoembryonic antigen(CEA) rise obviously, the patient may suffer from colon cancer, gastric cancer, lung cancer and cholangio carcinoma. If liver cancer, breast cancer, ovarian cancer, pancreatic cancer exists, it may also rise.
Tumor markers are substances found at higher than normal levels in the blood of some people with cancer. A sample of blood will be taken and then sent to a laboratory for analysis.
