CA27.29 Breast Tumor Marker

Abbrev Code:C2729   
Order Code:LAB853Order Name:CA27.29 Breast Tumor Marker
Order Instructions:Optional parallel CA 15-3 (LAB8258) testing can be ordered in conjunction with CA27.29 via an At Order Entry question in Epic. See Associated Link for more information.
Synonyms:Cancer Antigen 27.29 (CA 27.29); CA2729; CA 2729
Methodology:Chemiluminescent immunoassay
CPT Codes: 86300 x1, 86300 x1
Turnaround Time:Test performed daily; results are reported within 2 days.

This test uses an in vitro diagnostic (IVD) that has been cleared or approved by the FDA.

Associated Links:

CA15-3 Parallel Testing for Patients Monitored with CA27.29

Collection Instructions

Optimal Volume:3 mL
Minimum\Peds Volume:1.2 mL
Container:Red or gold (gel)
Alternate Containers: Red (no gel)

Processing and Shipping

Specimen Processing:Allow specimen to clot completely at room temperature. Separate serum from cells ASAP or within 2 hours of collection. Centrifuge and aliquot 1 mL, 0.5 mL minimum.
Shipping Instructions:Store and ship at frozen temperature.
Stability:8 hours at room temperature; 7 days refrigerated; 3 months frozen.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:0080392


Reference Range:Less than or equal to 39 U/mL
Use:The CA 27.29 assay is intended for use in monitoring: 1) disease progression and/or response to therapy in patients with metastatic disease, and 2) disease recurrence in patients treated previously for stages II or III breast carcinoma who are clinically free of the disease. Serial testing in patients who are clinically free of disease should be used in conjunction with other clinical methods for early detection of cancer recurrence.

Limitations: Patients with confirmed breast carcinoma frequently have CA 27.29 assay values in the same range as healthy individuals.  Elevations may also be observed in patients with non-malignant disease. Results of this test must always be interpreted in the context of morphologic and other relevant data and should not be used alone for a diagnosis of malignancy.

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