Test ID C2729 Breast Carcinoma-Associated Antigen, Serum
Useful For
Serial testing in women with prior stage II or III breast cancer who are clinically free of disease
Predicting early recurrence of disease in women with treated carcinoma of the breast
Indicating that additional tests or procedures should be performed to confirm recurrence of breast cancer
This test is not useful for screening women for carcinoma of the breast.
Method Name
Chemiluminometric Immunoassay
Reporting Name
Breast Carcinoma Assoc Ag(CA 27.29)Specimen Type
SerumSpecimen Required
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions:
1. Centrifuge and aliquot serum into a plastic vial within 2 hours of collection. Specimens that have not been aliquoted will be canceled.
2. Send refrigerated.
Specimen 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 |
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.
Day(s) Performed
Monday through Friday
Report Available
Same day/1 to 2 daysPerforming Laboratory

Test 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)