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HelpTEST ID CA153 Cancer Antigen 15-3 (CA 15-3), Serum
Reporting Name
Cancer Ag 15-3, (CA 15-3), SSpecimen Type
SerumSpecimen Required
Patient Preparation: For 12 hours before specimen collection, patient should not take multivitamins or dietary supplements (eg, hair, skin, and nail supplements) containing biotin (vitamin B7).
Supplies: Sarstedt 5 mL Aliquot Tube (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
0.75 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 7 days | |
| Frozen | 90 days |
Method Name
Electrochemiluminescence Immunoassay (ECLIA)
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
Reference Values
Males: <30 U/mL (use not defined)
Females: <30 U/mL
Day(s) Performed
Monday through Saturday
Report Available
1 to 3 daysSpecimen Retention Time
2 weeksPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
86300
Forms
If not ordering electronically, complete, print, and send an Oncology Test Request (T729) with the specimen.
Useful For
Managing breast cancer patients when used in conjunction with clinical information and other diagnostic procedures
Serial testing to assist in early detection of disease recurrence in previously treated stage II and III breast cancer patients
Monitoring response to therapy in metastatic breast cancer patients
This test is not useful as a cancer screening test.