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Cancer Antigen 15-3
MessagePlease order CA15.3 for routine screening. For specific CA27.29 orders, please contact the lab.
Test Code
CA153 - NCMC
CPT Codes
86300
Preferred Specimen
1.0 mL serum from Serum SST or Red Top
Minimum Volume
0.5 mL
Specimen Stability
| Specimen Type | Temperature | Time |
| Serum SST | Refrigerated | 48 hours |
| Red Top – Separated* | Refrigerated | 48 hours |
| Serum SST or Red Top – Separated* | Frozen | >48 hours |
*Centrifuge and aliquot into a plastic vial.
Setup Schedule
Monday through Sunday; Continuously
Report Available
Same Day
Reference Range
| Age | |
| 0-7 days | 3.4 – 24.0 |
| 7 days – 12 months | 4.9 – 33.0 |
| 1 year – 19 years | 3.9 – 21.0 |
| 19 years – 150 years | < 25.0 |
Clinical Significance
Immunological in vitro assay for quantitative determination of CA 15-3 in human serum and plasma to aid in the management of breast cancer patients. In conjunction with other clinical and diagnostic procedures, serial testing with this assay is an aid • in the early detection of recurrence in previously treated stage II and III breast cancer patients • for monitoring response to therapy in metastatic breast cancer patients
Performing Laboratory
North Colorado Medical Center
