AFP is tumor marker (Hepatocellular carcinoma, yolc sac tumor (endodermal sinus tumor) of ovary or testis) so in your answer it will increase in hepatocellular carcinoma. But what is cause the tumor it is second questioni have a query... will alpha-fetoprotein be found in hep C positive hepatocellular carcinoma??? or it will be elevated in Hep B only???