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HelpTest Code CA 199 Carbohydrate Antigen 19-9 (CA 19-9), Serum
Specimen Requirements
Draw blood in gold serum gel tube. Spin down and send 1 mL of serum refrigerated.
Specimen Stability
| ROOM TEMP | REFRIG 2-8 DEGREES | FREEZE -20 DEGREES |
| 5 DAYS | 14 DAYS | 3 MONTHS |
Performing Laboratory
Conway Regional Laboratory Services
Reference Values
<40 U/mL
Do not interpret serum levels of CA 19-9 as absolute evidence of the presence or absence of malignant disease. Measurements of CA 19-9 should always be used in conjunction with other diagnostic procedures, including information from the patient’s clinical evaluation.
Methodology
Chemiluminescence
Day(s) Test Set Up
Monday through Sunday
Available STAT
Test Classification and CPT Coding
86301