Cancer Antigen 19 – 9 - Tumor Marker

AsseyMethod: Chemiluminescence
Abbrevation: CA 19-9
Sector: Hormone 1
SampleType: S
S.Vol: -
Transport: at 2-8˚c, -20˚c
Storage: 1 day at 2-8˚c for longer time at -20˚c
Test Name: Cancer Antigen 19 – 9 - Tumor Marker
Normal Range: up to 37

This test is related to
Why get tested?

To help tell the difference between cancer of the pancreas and bile ducts and other conditions; to monitor response to pancreatic cancer treatment and to watch for recurrence.

When to get tested?

When your doctor suspects that you have pancreatic cancer and during or following pancreatic cancer treatment.

Sample required?

A blood sample taken from a vein in your arm.

Test preparation needed?


What is being tested?

Cancer antigen 19-9 (CA 19-9) is a protein that exists on the surface of certain cells. CA 19-9 does not cause cancer; rather, it is a protein that is produced by the tumour cells, making it useful as a tumour marker to follow the course of the cancer.

CA 19-9 is elevated in most patients with advanced pancreatic cancer, but it may also be elevated in other cancers and diseases such as bowel cancer, lung cancer and gall bladder cancer, as well as in benign diseases such as gall stones, pancreatitis, cystic fibrosis, and liver disease. Because elevated levels of CA 19-9 are seen in many diseases, elevated levels do not necessary mean the presence of pancreatic cancer.  Very small amounts of CA19-9 may also be found in healthy patients.

How is the sample collected for testing?

A blood sample is obtained by inserting a needle into a vein in the arm.

Is any test preparation needed to ensure the quality of the sample?

No test preparation is needed.