From: Serum level of cytokeratin 19 as a diagnostic and prognostic marker in patients with HCV-related hepatocellular carcinoma
Best cutoff
SN
SP
PPV
NPV
AFP
25.5 ng/ml
80.5%
75%
93%
48.4%
CK 19
6.25 ng/ml
63.4%
55%
85.2%
26.8%
Combined AFP and CK 19
25.5 ng/ml and 6.25 ng/ml
93.9%
45%
87.5%
64.3%