There is no exact value of how much SCC is cancer, SCC is a tumor marker, which can only assist in the diagnosis of tumor, but not confirm the diagnosis of tumor. However, elevated SCC should be taken seriously and timely consultation should be made for clear diagnosis. SCC is squamous cell antigen, which is a common tumor marker in clinic, often used in the screening of squamous lung cancer, cervical cancer, skin cancer, esophageal cancer, etc. Under normal circumstances, the value of SCC should be less than 1.5 μg/L. If there is a significant increase in SCC, especially if it exceeds the normal range by more than 10 times, it should be taken seriously, and the patient should seek medical treatment in time to improve the other tests to exclude the possibility of malignant tumors. It should be noted that mildly elevated SCC can also be seen in skin diseases, benign lung diseases, kidney diseases, such as lupus erythematosus, obstructive pneumonia, chronic nephritis, etc. Elevated SCC alone cannot confirm the diagnosis of the disease. SCC can only be used as a preliminary screening test, and there is no way to be sure that it is cancer with a single test result, and it is necessary to improve the CT, MRI, and pathological tissue biopsy in time to make a comprehensive judgment. If you find SCC is high, it is recommended to consult a doctor in time, improve the examination under the guidance of a professional doctor, make a clear diagnosis, and actively treat the disease.