Carbohydrate Antigen 19-9, Blood - Saskatoon

Overview

Alias

• CA 19-9

Specimen Information

Specimen types accepted

• Serum

Specimen collection container

• Preferred Collection Container: Gold (gel)
• Alternative Collection Container: Red (non-gel
   

Required volume

• Optimal Volume: 1 full 4.5 mL collection tubes
• Minimum Volume: 1 mL serum

(Submitting the minimum volume makes it impossible to repeat the test or perform confirmatory/reflex testing. In some situations, a minimum volume may require a second collection) 

Rejection criteria

• Specimens received where the proper collection protocols were not followed
• Pathology and Laboratory Medicine Acceptance and Rejection Criteria
   

Performance

Days/times performed

Availability	Shipped Mondays and  Wednesdays 1 day turnaround time once received at testing laboratory
Testing site	Referred out by St. Paul’s Hospital Laboratory to Dynacare, London, ON

 

Maximum laboratory time

Results reporting

• 1 day turnaround time once received at testing laboratory
• Shipped overnight Mondays and Wednesdays

Last Updated: February 20, 2026