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Test Code CA15-3 Breast Cancer Antigen (CA15-3)

Important Note

Values obtained with different assay methods cannot be used interchangeably

Performing Laboratory

Memorial Hospital Laboratory- Automated Procedures  304-388-5953       
Teays Valley Hospital Laboratory 304-757-1770
Beckley Cancer Center Laboratory 304-461-2222

Specimen Requirements

Memorial, Teays

Plasma-Mint Green, Dark Green Lithium Heparin or Serum-SST gold top, red top

Allow SST or red top to completely clot

Spin and physically separate plasma/serum from contact with cells as soon as possible

4 mL of plasma/serum (minimum 2 mL)

 

Beckley

Serum, Heparin Plasma and EDTA Plasma

Specimen Rejection

  • Improperly labeled, collected, stored, and transported
  • Quantity not sufficient
  • Hemolyzed 
  • Lipemic

Additional Rejection at Beckley Only

  • Turbid

Storage and Stability

Memorial, Teays 

Room temperature 15-30oC 8 hrs
Refrigerated 2-8oC 48 hrs
Frozen <-20oC Not specified

 

Beckley

Refrigerated 2-8oC 7 days
Frozen <-20oC 4 weeks

Avoid repeat freeze thaw cycles.

Reference Values

0.0-31.3 U/mL

Methodology

Memorial, Teays -Beckman Coulter Chemiluminescent two-site immunoenzymatic sandwich assay

Beckley- Immunometric immunoassay

Days Test Set Up and Turnaround

Memorial, Teays

Monday through Sunday, Continuously

AM Collection Expected by 9AM same day
Routine Expected within 24 hrs
Stat Expected within 1 hr
Timed Expected results are test dependant

Beckley 

Monday through Friday continuously

CPT Coding

86300

Beckman Coulter IFU

CA 15-3 -IFU