Sign in →

Test Code CA27Q CA 27.29

Additional Codes

Epic: LAB2977

Quest: 29493

Specimen Required

Specimen Type: Serum

Collection Container/Type

Preferred: Serum gel

Acceptable: Red top

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Specimen Minimum Volume

0.5 mL

Specimen Stability

Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days

Reference Range

CA 27.29 <38 U/mL

 This test was performed using the Siemens Chemiluminescent method. Values obtained from different assay methods cannot be used interchangeably. CA 27.29 levels, regardless of value, should not be interpreted as absolute evidence of the presence or absence of disease.

Day(s) and Time(s) Performed


Report Available

Next day

Clinical Significance

CA 27.29 may be useful for monitoring patients for metastatic breast cancer.

Method Name

Immunoassay (IA)

CPT Code(s)


Performing Laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153


CA 27.29 is not intended as a screening test.


Carbohydrate Antigen 27.29,Breast Carcinoma Associated Mucin Antigen,Cancer Associated Breast Antigen (CABA),Cancer Antigen 27.29