From: Auxiliary diagnostic value of tumor biomarkers in pleural fluid for lung cancer-associated malignant pleural effusion
PF CEA
Serum CEA
PF/serum CEA
PF CYFRA 21-1
< 0.001
–
0.885
0.067
0.132
Serum CYFRA 21-1
0.016
0.018
0.188