Test Overview
Test Methodology

Chemiluminescent Immunoassay

Test Usage

Limited to Mlab client request only.

May be useful for predicting early recurrence of disease in women who have been treated for stage II or stage III carcinoma of the breast. This test should be used in conjunction with other clinical methods used for the early detection of recurrence. The test can aid in the management of breast cancer patients with metastatic disease by monitoring the progression or response to treatment.

Reference Range *

Females >/= 18 years: < or = 38 U/mL
Males >/= 18 years: < 0r = 38 U/mL
Reference ranges have not been established for patients who are <18 years of age

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Not useful as a screening test for carcinoma of the breast. The use of this test is not defined in males.

Test Details
Days Set Up
Daily, 24 hours
Analytic Time

4 hours

Soft Order Code
MiChart Code
  • Breast Carcinoma Associated Antigen 27.29
  • Cancer Antigen 27.29
  • CA2729
Chemical Pathology
Specimen Requirements
Collection Instructions

Collect specimen in an SST or red top tube. Refrigerate and send intact specimen with 8 hours of collection. Alternatively, centrifuge, aliquot serum into a plastic vial and refrigerate up to 48 hours or freeze for longer storage.

Alternate Specimen
Red Top Tube
Normal Volume
1.0 mL serum
Minimum Volume
0.25 mL serum
Additional Information

Tested by a chemiluminescent immunoassay manufactured by Siemens Healthineers, performed on Atellica IM system. Results determined from different manufacturers and/or methods may not be comparable.

CPT Code
Fee Code