CA 19-9 (CARBOHYDRATE ANTIGEN 19-9)

Specimen Required
Draw blood in a SST. Centrifuge, separate and send 1.0 mL serum (0.4 mL minimum) in a screw-capped plastic vial.

Alternate Specimen
Serum: Red-top

Rejection Criteria
Grossly hemolyzed or lipemic specimens, plasma

Methodology
Chemiluminescence

Stability
Room Temperature: 8 hours; Refrigerated: 72 hours; Frozen: 14 days

Reference Range
0-35 U/mL

Performed
Monday-Friday

Turnaround Time3 days
Test CodeCA199
CPT-4 Code (s)
86301
LOINC Codes
24108-3

Warde
Medical
Laboratory