My mother has metastases in the liver ...

My mother has metastasized liver, removed part of the large intestine that had a primary tumor, is at home because it can not be treated because it is very weak after the surgery, we performed blood tests and gave the gamma-gt is 286 u / l, I wonder if this is far advanced?
Expert answer:

Gamma-GT does not serve to assess the degree of severity of cancer, but to reassure it is not such a high value.