Alpha-Fetoprotein (AFP) is a 64 kD tumor-associated embryonal antigen produced by fetal liver, hepatoma, yolk sac, and several germ cell tumors of testicular and ovarian origin of the germ cell tumors, only embryonal carcinoma and endodermal sinus tumors stain positive for AFP and not teratomas. The positive results are useful in distinguishing embryonal carcinoma from seminoma. AFP is present in the mononuclear embryonal carcinoma cell and in the intracellular or extracellular hyaline droplets.
|Tissue Type/Cancer Type|
0.5 mL – Manual – Concentrate, 1 mL – Manual – Concentrate, 6 mL – Manual – RTU, 50 Tests – Automation – Xmatrx, 100 Tests – Automation – i6000, 200 Tests – Automation – Xmatrx, 5 slides – Xmatrx, 5 slides – Manual