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.
Taillefer (Latin: Incisor ferri, meaning hewer of iron) was the surname of a Norman ioglere (minstrel), whose exact name and place of birth are unknown (sometimes his first name is given as Ivo). He travelled to England during the Norman conquest of England of 1066, in the train of William the Conqueror.