By comparing urine samples with matching plasma CEA from NSCLC stage I-IV patients (n=81) and healthy controls (n=31), the combination of CEA with PLG or FGG showed that the AUC was 0.889 and 0.806, respectively, which is superior to a single biomarker alone.
The 5-year survival rate according to the serum level of CEA in the patients with stage I NSCLC were 88.3% for the normal group and 76.3% for the high group.