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Cancer antigen 15-3

Lab Section:  Chemistry  
Lab Location:  Main Lab
Test ID: LAB776 
Methodology: Chemiluminescent Immunoassay
Schedule: Monday-Friday cut off 2 PM
Reported: 1 day
Specimen Requirements:  Collection: 1.0 mL Blood in a Gold Top Tube or Heparinized Plasma.
Pediatric volume: 0.5 mL.
Unacceptable conditions: Gross hemolysis
Stability: After separation from cells and refrigerated, 7 days


Clinical Indications: The CA 15-3 assay is used to aid in the management of Stage II and III breast cancer patients. Serial testing for patient CA 15-3 assay values should be used in conjunction with other clinical methods for monitoring breast cancer. Patients with confirmed breast carcinoma frequently have CA 15-3 assay values in the same range as healthy individuals. Elevations may be observed in patients with nonmalignant disease. For these reasons, a CA 15-3 assay value, regardless of level, should not be interpreted as absolute evidence of the presence or absence of malignant disease.

Reference Interval:  18 Years old and up 0.0 - 31.3 U/mL
CPT Code(s): 86300
Last Changed: 09/04/2016 14:59:21
Last Reviewed: 10/19/2016 12:57:26