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What is the normal range of CA 19-9
by mrsdaffodil, May 21, 2008 09:08PM
What is normal range of CA 19-9
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Tumor markers are molecules occurring in blood or tissue that are associated with cancer and whose measurement or identification is useful in patient diagnosis or clinical management.
CA 19-9 is the most sensitive and specific marker currently used in the diagnosis of pancreatic cancer. Its interpretation, however, can be limited in the presence of certain nonmalignant diseases that have been correlated with elevated serum levels of CA 19-9.
CA 19-9 upto <40 U/mL is the normal reference value. The mean normal value is 7 U/ml.
CA 19-9 is elevated primarily in patients with carcinoma of the gastro-intestinal tract.
The greatest usefulness of CA 19-9 is with pancreatic cancer. 65% of patients with pancreatic cancer will have CA 19-9 levels greater than 120 kU/L.
ref:http://www.sydpath.stvincents.com.au/tests/CA199.htm