cancer antigen CA 19-9 (carbohydrate antigen 19-9) in serum

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Clinical significance

CA 19-9, CA 19-5 & CA 50 in serum are elevated in:

Use of both CA 19-9 & CA 50 can improve sensitivity.

CA 19-9, CA 19-5 & CA 50 may be also elevated by cholestasis.

CA 19-9 may also be elevated with:

Increases

Additional terms

References

  1. Clinical Diagnosis & Management by Laboratory Methods, 19th edition, J.B. Henry (ed), W.B. Saunders Co., Philadelphia, PA. 1996, pg 1075-76
  2. Harrison's Principles of Internal Medicine, 14th ed. Fauci et al (eds), McGraw-Hill Inc. NY, 1998, pg 497
  3. Cancer Antigen-GI (CA 19-9) Laboratory Test Directory ARUP: http://www.aruplab.com/guides/ug/tests/0080461.jsp

Patient information

cancer antigen CA 19-9 patient information