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.
Located on I-70 fifty miles east of Columbus, Zanesville is the county seat and largest city (population 25,586) in Muskingum County. Zanesville was founded in 1797 by John McIntire on land deeded by his father-in-law, Ebenezer Zane. It was Zane who led a party of men to cut a road (Zane's Trace) from Wheeling, WV southeastward to Maysville, KY, leading to the establishment of Zanesville, Lancaster and Chillicothe at major river crossings.