The other is the Roche method. The Roche method has a wider band of what is considered normal. It's important you understand what testing method your lab uses and to have consistent measurements for the basis of comparison for trending. If you shift labs, expect to have at least 2 CEA tests done to establish the new basis for comparison.
Zane /zane/ [1 syll.] as a boys' name is pronounced zayne. It is of Hebrew origin, and the meaning of Zane is God is gracious. Possibly a variant of Hebrew John, or a variant of a Scandinavian surname.
William George Zane, better known as Billy Zane, was born on February 24, 1966 in Chicago, Illinois, to Thalia (Colovos) and William Zane, both of Greek ancestry. His parents were amateur actors and managed a medical technical school. Billy has an older sister, actress and singer Lisa Zane. Billy was bitten by the acting bug early on.