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HelpTest Code LAB57 Carcinoembryonic Antigen (CEA), Serum
Reporting Title
CEA
Methodology
Roche Diagnostics Electrochemiluminescence Immunoassay
Results from assays produced by different manufacturers may not be comparable
Useful For
Used in cancer patient prognosis, status, assessment, and monitoring.
Performing Laboratory
OhioHealth Laboratory Services-RMH Special Testing and MH Core Laboratories
Specimen Requirements
Prefer: Serum
Draw blood in a gold-top serum gel tube(s). (Hemolyzed specimen is not acceptable.) Spin down and send 1 mL of serum refrigerated. Sample is stable refrigerated for 14 days
Also acceptable:
A speckled-top serum gel tube (s) or a plain, red-top tube(s) is also acceptable.
Heterophile antibodies may interfere with this assay.
Collection Instructions:
1. Serum gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated | 7 days |
| Ambient | ||
| Frozen | 6 months |
Specimen Transport Temperature
Refrigerate/Frozen OK/Ambient OK
Reference Values
Riverside Special Testing
0-2.5 ng/mL (nonsmoker)
0-5.0 ng/mL (smoker)
Serum markers are not specific for malignancy, and values may vary by method. Values seen in malignant and non-malignant conditions overlap considerably, ruling out the use of CEA as a screen for malignancy. CEA is elevated in a variety of malignant conditions as well as collagen vascular disease, infarction, infections, inflammatory lesion, renal impairment, smoking, and trauma.
Day(s) Test Set Up
Monday through Friday Continuous
Saturday and Sunday Day shift only
Test Classification and CPT Coding
82378