AFP and hepatocellular carcinoma: From the comparison of the NMR profiles, we observed that HCC patients have significantly higher levels of cholesterol, some LDL subclasses, some HDL subclasses, Isoleucine, Valine, Triglycerides, Lactate, Alanine, Albumin and AFP, and significant lower levels of HDL_s, Dimethylamine, Glycerol and total Bilirubin.