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HelpTest Code Billings Clinic: 8707 Mayo: C2729 Breast Carcinoma-Associated Antigen, Serum
Reporting Name
Breast Carcinoma Assoc Ag(CA 27.29)Performing Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Aiding in the management of breast cancer in patients with metastatic disease by monitoring the progression or regression of disease in response to treatment
Serial testing in women with prior stage II or III breast cancer who are clinically free of disease
May be useful for predicting early recurrence of disease in women with treated carcinoma of the breast
This test is not useful for screening women for or diagnosis of carcinoma of the breast.
Method Name
Chemiluminometric Immunoassay
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions:
1. Within 2 hours of collection, centrifuge and aliquot serum into a plastic vial. Specimens that have not been aliquoted will be canceled.
2. Send refrigerated.
Specimen Type
SerumSpecimen Minimum Volume
0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Refrigerated (preferred) | 7 days | |
| Frozen | 90 days | ||
| Ambient | 4 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
Reference Values
Males
≥18 years: ≤38.0 U/mL (use not defined)
Females
≥18 years: ≤38.0 U/mL
Reference values have not been established for patients who are younger than 18 years of age.
Serum markers are not specific for malignancy, and values may vary by method.
Interpretation
Increased levels of cancer-associated antigen (CA 27.29) (>38 U/mL) may indicate recurrent disease in a woman with treated breast carcinoma and may be useful as an indication that additional tests or procedures should be performed to confirm recurrence.
Day(s) Performed
Monday through Friday
Report Available
Same day/1 to 3 daysTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
86300
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| C2729 | Breast Carcinoma Assoc Ag(CA 27.29) | 17842-6 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| C2729 | Breast Carcinoma Assoc Ag(CA 27.29) | 17842-6 |
Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:
-General Request (T239)
-Oncology Test Request (T729)