Test Code CA15-3 Cancer Antigen 15-3 (CA15-3)
Specimen Required
Lithium Heparin Plasma Separator Tube (Green) or
Serum Separator Tube (Yellow)
Specimen Handling and Stability
Handle and store specimens in stoppered containers to avoid contamination and evaporation.
Centrifuge specimens to remove the pasma/serum from the cellular material after collection.
Specimen Stability
* Refrigerated: 7 Days
* Frozen: 4 Weeks
CPT Code
86300
Additional Test Information
Different test methods cannot be used interchangeably. DF3 defined antigen in a given patient sample determined with different tests and from different manufacturers can vary due to differences in test methods and reagent specificity.