Non-small cell lung cancer associated antigen 4.07 cannot determine whether it is normal or not. There are many types of non-small cell lung cancer, and different types of lung cancer have different antigens and normal ranges, so it is not possible to determine whether it is normal from the figure of 4.07 alone, and it is also necessary to look at the corresponding antigen. If it is squamous epithelial cell antigen SCC for squamous lung cancer, its normal range should be kept within 1.5 μg/L, and the indicator of 4.07 μg/L is abnormal. However, in the case of large cell carcinoma or lung adenocarcinoma, the corresponding carcinoembryonic antigen is usually below 15 μg/L, which means that 4.07 μg/L is normal. Tumor markers cannot be the final diagnosis, but need to be analyzed together with CT, MRI, pathological examination and other tests.