Cancer Antigen 15-3

Last Modified: 6/16/2022 7:51:18 AM

  Medicare Medical Necessity Restrictions May Apply
Medical Necessity Documentation:  
Client Notes:  
Patient Preparation:  
Specimen Requirements: 1.0 mL Serum from a Red Top Tube in a Plastic Vial
Collection Instructions:  
Minimum Volume: 0.5 mL Serum
Transport & Storage: Temperature/Stability: 7 days Ambient
7 days Refrigerated
28 days Frozen
Rejection Criteria: Gross hemolysis • Gross lipemia
Reference Range: < 32 U/mL
Critical Ranges:  
Test Comments: This test was performed using the Siemens (Bayer) Chemiluminescent method. Values obtained from different assay methods cannot be used interchangeably. CA 15-3 levels, regardless of value, should not be interpreted as absolute evidence of the presence or absence of disease.
Methodology: Immunoassay (IA)
Clinical Significance: CA 15-3 may be useful for monitoring patients with metastatic breast cancer and certain ovarian cancers. The CA 15-3 values from sequential samples have a high correlation with the clinical course in most patients with metastatic breast cancer.
Documentation: Limitations: Benign diseases of the breast and liver may cause elevated results
Custom Panel: No


Turn Around Time: 1 to 2 days
Days Performed: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday
Sites Performed: Quest - Chantilly
PHL Test Code: C153
EPIC Test Code: LAB3079
Send Out Test Code: 5819
Alternate Test Names: CA 15-3
Included Tests:  
CPT Coding: 86300

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