Serum ?alpha-fetoprotein(AFP)is? a? commonly? used? and? important? method? for? diagnosing? primary? hepatocellular carcinoma(HCC),and? it? is? also? one? of the? main? methods? ofliver? cancer? screening.? When? liver? cells? become

cancerous,? AFP? is? secreted? and? produced? byliver? cancer? cells? again,? and? about70%? of? liver? cancer? patients? will??? have elevated alpha-fetoprotein in the serum, so alpha-fetoprotein has become a specific clinicalindicator for the diagnosis? of? primary? liver? cancer.