Normal human SCC index is less than 1.5μg/L. SCC is squamous epithelial cancer cell antigen, the reference value is less than 1.5μg/L. Elevated SCC in serum is commonly found in squamous cell carcinoma of the lung, esophageal cancer, cervical cancer, but it can also be seen in some relatively benign diseases, such as psoriasis, pemphigus, atopic dermatitis and other dermatological diseases. SCC concentration has obvious correlation with the stage of cervical squamous carcinoma, and is commonly used for prognostic assessment, monitoring of therapeutic efficacy and tumor recurrence in cervical squamous carcinoma, lung squamous cell carcinoma, and esophageal carcinoma. SCC levels will decrease when anti-tumor therapy is effective. If the SCC level is higher than normal before treatment, it can be reduced to normal after treatment. If cancer recurrence or metastasis occurs, SCC levels may rise again. If you find that the SCC is elevated, you need to listen to the advice of a professional doctor to find out the cause and then treat it as soon as possible.