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HelpTest Code CEA Carcinoembryonic Antigen (CEA), Serum
Additional Codes
LAB57
Performing Laboratory
Central Peninsula Hospital
Collection Method
Venipuncture
Container
Gold Top / Serum Separator / Additive Free
Specimen Type
Preferred
- Serum- Gold Top SST or Red Top
Acceptable
- Plasma- Light Green Top (Lithium heparin)
Minimum Volume
0.5ml
Specimen Stability
| Ambient | 7 days |
| Refrigerated (4°C to 8°C) | 14 days |
| Frozen(-40°C to 0°C) | 6 months |
Reference or Target Ranges
<3.0 U/mL
Report comment:
Smoking can raise CEA levels, typically up to 5.0 ng/mL.
This test was performed on Roche Cobas analyzers using an electrochemiluminescence immunoassay. Results may vary between labs and aren’t directly comparable.
Reportable Units
U/mL
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | 2200 mg/dL |
| Icterus Threshold | 66 mg/dL |
| Lipemia Threshold | 1500 mg/dL |
| Other | QNS, contaminated, improperly labeled, improper specimen type |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time |
Stat: 1 hour Routine: 4 hours |
| Stat Availability | Yes |
| Performing Bench | CPH Chemistry |
| Methodology/Method Description |
Roche Cobas |
CPT Codes
82378
Last review/edit date
2025