This antibody is a useful tool for the identification of germ cell tumors (e.g. seminomas) and for the identification desmoplastic small round cell tumors (a soft tissue sarcoma). Placental Alkaline Phosphatase (PLAP) is a highly sensitive marker for the majority of embryonal carcinomas, and endodermal sinus tumors of the testis. Differential identification is aided by the results from a panel of antibodies. This antibody may be used along with EMA and cytokeratin [AE1/AE3] to distinguish germ cell tumors from somatic tumors.