Which other tumor marker tests are performed with serum CA 27-29 testing?

Updated: Jul 11, 2019
  • Author: Nikhil G Thaker, MD; Chief Editor: Eric B Staros, MD  more...
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Answer

Answer

Consideration may be given to ordering multiple tumor markers because of the heterogeneity in cell composition of each tumor. Other tumor markers to follow breast cancer include CEA, CA 15-3, HER2 extracellular domain, and CA 125. [6]

CA 27-29 measures an overlapping antigen as the cancer antigen 15-3 (CA 15-3) assay. One or the other tumor marker is ordered, typically not both.


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