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Pathology Departments Requesting & Reporting Blood Test Information Phlebotomy Guide Contact us
Blood Sciences

Blood Test Information

minimum sample volume required ~ 5ml

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Test Code: C19

Tube type: SST

Other acceptable tube types
Lithium heparin (pale green)

Special instructions

Reference Range
Please note: Following method change from 10/01/23, patients with known elevated CA19-9 may have significantly higher results with the new method.

Minimum retesting interval
Test should not be repeated within 7 days


Turnaround Time
2 days

Department: Biochemistry

Clinical Application
CA19.9 is a tumour marker for diagnosed gastrointestinal cancer. Its use in screening for disease is limited by sensitivity and specificity.


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