Cancer Antigen (CA) 27.29 (Serial Monitor)
Use
The Cancer Antigen (CA) 27.29 test is used for long-term serial monitoring of cancer antigen levels in patients undergoing treatment for cancer, particularly breast cancer. It assists clinicians in tracking changes in antigen levels over time, which may reflect tumor response to therapy or disease progression. This monitoring can support clinical decision-making regarding treatment adjustments or the need for further diagnostic evaluation.
Special Instructions
The account must submit the patient's Social Security number to monitor. Values obtained with different assay methods should not be used interchangeably in serial testing. It is recommended that only one assay method be used consistently to monitor each patient's course of therapy.
Limitations
Values obtained with different assay methodologies should not be used interchangeably in serial testing. Results should not be interpreted as direct indicators of the presence or absence of malignant disease. Variability between assay methods can affect the comparability of results, necessitating the use of consistent methods for longitudinal monitoring.
Methodology
Immunoassay (Immunochemiluminometric Method (ICMA))
Biomarkers
LOINC Codes
- 17842-6
- 80563-0
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
Not provided
Minimum Volume
Not provided
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