Test Name
CA 15-3
Aliases
CARBOHYDRATE ANTIGEN 15-3
Abbreviations
-
Test Classification
INDIVIDUAL
Department
SPECIAL CHEMISTRY
Sub Department
-
TAT Category
ELAPSED (CONTINUOUS) TIME
Estimated TAT
168
TAT Units
HOURS
Test Requirements
Serum in plain tube (red top) or SST tube (yellow top) or in a separation vial. Centrifuge tubes within 1 hour. Separate centrifuged serum in plain tubes within 1 hour.
SHIPPING/TRANSPORTATION REQUIREMENTS
Shipping Temperature: Refrigerated
ANALYTE STABILITY
Room Temperature: 3 days at 20-25°C │ Refrigerated: 7 DAYS at 2-8°C │ Frozen: 3 months at -20°C
Clinical Utility
Monitoring treatment response, disease progression & assessing recurrence in breast cancer. Levels may also be elevated in other cancers e.g. pancreatic, lung, endometrial, ovarian, cervical, colon, liver etc.
Last Review
26th Feb 2026