Tests:Carcinoembryonic Antigen: Difference between revisions
Tests:Carcinoembryonic Antigen
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|CEA | |CEA | ||
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| | |Availability | ||
|Monday - Friday | |Monday - Friday | ||
Contact the lab if urgent testing is required | Contact the lab if urgent testing is required | ||
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== Specimen Requirements == | == Specimen Requirements == | ||
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|Specimen | |Specimen | ||
|Serum | |Serum | ||
Plasma | Plasma | ||
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|Preferred | |Preferred | ||
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|Unacceptable | |Unacceptable | ||
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|Specimen Transportation | |||
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== Aliquot Requirements == | == Aliquot Requirements == | ||
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|Sample | |Sample | ||
|Serum | |Serum | ||
Plasma | Plasma | ||
Revision as of 12:23, 20 March 2025
Overview | |
|---|---|
| Department | Biochemistry |
| Test Code | TCEA |
| Synonyms | CEA |
| Availability | Monday - Friday
Contact the lab if urgent testing is required |
| Turnaround Time | 2 hours – 3 days |
| Stability – Add test | 24 hours |
Specimen Requirements | |
| Specimen | Serum
Plasma |
| Preferred | 6 mL Red-Top |
| Acceptable | 6 mL Yellow-Top |
| Unacceptable | |
| Specimen Transportation | |
| Paediatric Requirements | Minimum 0.5 mL blood in 6 mL Red-Top |
Aliquot Requirements | |
| Sample | Serum
Plasma |
| Preferred Volume | |
| Minimum Volume | 100 uL |
| Aliquot Transportation | |
Clinical Information | |
| Reference Intervals | 0.0 - 5.0 ug/L |
| Test Method | Abbott Alinity Ci using Abbott reagents. |
| Advanced Notice | Not required |
| Patient Preparation | Not required |
Comments | |
| CEA is a marker for colorectal, gastrointestinal, lung and breast carcinomas.
CEA levels are not an absolute test for evidence of malignancy and must be used in conjunction with the clinical evaluation of the patient and other diagnostic evidence. Healthy non-smokers have CEA levels less than 3.0 µg/mL, while 6% of otherwise healthy smokers have CEA levels up to 5.0 µg/mL. CEA is not suitable as a screening test for the primary diagnosis of tumours. For the serial monitoring of tumours, tumour markers should be tested in the same laboratory. | |