Tumor Marker is a chemical or biological substance that reflects the presence of tumors.
They may not be found in normal adult tissues but only in embryonic tissues, or in tumor tissues in a much larger amount than in normal tissues. Their presence or quantitative change may indicate the nature of the tumor, thereby understanding the tumor tissue formation and cell differentiation. , cell function, to help the diagnosis, classification, prognosis and treatment guidance of tumors.
Factors affecting tumor standards:
1. Tumor markers have the dual characteristics of specificity and non-specificity.
2. Different tumor characteristics, such as tumor staging, size, location, tissue source and metastatic tendency.
3. Differences in various antibodies, such as polyclonal antibodies, monoclonal antibodies, antibody determinants, and antibody affinity.
4. Differences in various detection systems, such as detection principles, markers, experimental conditions, detection techniques, detection instruments, and detection sensitivity.
5. Differences in the professional level and technical experience of the inspectors, as well as the laboratory conditions and the reliability of the experiments.
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