Tests:Carcinoembryonic Antigen: Difference between revisions
Tests:Carcinoembryonic Antigen
Updated method Alinity |
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|Test Method | |Test Method | ||
|Abbott Alinity i series analyser using Abbott | |Abbott Alinity i series analyser using Abbott reagents. Chemiluminescent microparticle immunoassay. | ||
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|Advanced Notice | |Advanced Notice | ||
Latest revision as of 20:37, 23 September 2026
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 |
| Preferred | Yellow-Top or Red-Top tube |
| Acceptable | |
| Unacceptable | Plasma |
| Specimen Transportation | |
| Paediatric Requirements | 0.5 mL blood in Red-Top tube |
Aliquot Requirements | |
| Sample | Serum |
| Preferred Volume | 0.5 mL |
| Minimum Volume | 100 µL |
| Aliquot Transportation | |
Clinical Information | |
| Reference Intervals | 0.0 - 5.0 µg/L |
| Test Method | Abbott Alinity i series analyser using Abbott reagents. Chemiluminescent microparticle immunoassay. |
| 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. | |
| Owner | Clair Crossley (Crossley1) |
|---|---|
| Last reviewed | 23.09.2026 |
| Next review | 23.09.2027 (OK) |