Cardiac Markers-cTnI/cTnT/ NT-proBNP/MYO/D-Dimer
A tumor marker (TM) is a substance secreted or discharged by cancer cells into body fluids or tissues, or a substance that is produced by a host in response to the presence of new organisms in the body that has entered body fluids or tissues. For clinical application, TMs refer to the relevant detectable substances in serum or other body fluids. Some TMs are absent from the normal human body, but present in embryos. Others are present at elevated levels in cancer patients as compared with those in the normal human body. Determination of the presence or level of TMs can aid the diagnosis of tumors and the analysis of the course of disease, provide guidance for treatment, and monitor recurrence or metastasis, as w ell as the determination of prognosis.