CA 19-9
What is analysed?
CA 19-9 is a tumour marker that is analysed to measure the level of a protein called CA 19-9 in the blood.
What does the result mean?
The result indicates the concentration of CA 19-9 in the bloodstream. Elevated levels of CA 19-9 may indicate the presence of certain types of cancer, particularly pancreatic cancer.
Why undergo the analysis?
The analysis is conducted to aid in the diagnosis, monitoring, and management of pancreatic cancer. It helps healthcare professionals assess the progression of the disease, response to treatment, and detect any recurrence.
When to undergo the analysis?
The analysis may be recommended when there is suspicion of pancreatic cancer, during cancer treatment, or to monitor the effectiveness of treatment.
What sample is required?
A blood sample is required for CA 19-9 analysis.
Is any prior preparation necessary?
No specific preparation is necessary before blood is taken. However, patients should follow any instructions provided by their healthcare provider.
How is it used?
CA 19-9 levels are used alongside other diagnostic tests and clinical assessments to aid in the diagnosis and management of pancreatic cancer.
What are the normal values?
Normal values for CA 19-9 may vary depending on the laboratory method used and individual factors. Generally, levels below 37 U/mL are considered normal.
CA 19-9 Reference Table
CA 19-9 Level (U/mL) | Interpretation |
Less than 37 | Typically considered within normal range |
37 or higher | May indicate the presence of pancreatic cancer or other conditions |
This table provides a simplified interpretation of CA 19-9 levels, aiding healthcare professionals in assessing pancreatic cancer risk and guiding patient management decisions.
What do altered values signify?
Elevated CA 19-9 levels may indicate the presence of pancreatic cancer, but they can also be elevated in other conditions such as liver disease and bile duct obstruction. Therefore, CA 19-9 levels alone are not diagnostic of pancreatic cancer and require further evaluation.