Specimen Requirements
Title
Carbohydrate Antigen (CA) 19-9
Specimen Requirement
Collect SST or red top, send 1.0 mL serum. After 30 minutes of clotting, promptly centrifuge and send. If using a red top, transfer serum to a screw top plastic tube, indicate sample type on tube and send.
Methodology
Stability
Room temp: 14 days, Refrigerated: 14 days, Frozen: 14 days
Reference Range
By Report*
Turnaround
1 day
Clinical Use
Useful for monitoring gastrointestinal, pancreatic, liver, and colorectal malignancies.
Test Code
CA19S