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Test Code CEA CEA

Aliases

Carcinoembryonic Antigen

Patient Preparation

No special patient preparation required

Collection Method

Venous collection

Minimum Volume

1 mL

Container

Lt Green / Plasma Separator / Lithium Heparin

Preferred Specimen

Light Green Top (lithium heparin) plasma

Acceptable Specimens

Serum:

  • Gold Top SST
  • Red Top

Plasma:

  • Light Geen Top (lithium heparin)
  • Pink Top (K3 EDTA)

 

Reference or Target Ranges

<0.6 – 4.7 ng/mL

Reportable Units

ng/mL

Critical Value

Not defined for this assay

Reasons for Rejection

Hemolysis Threshold 2200 mg/dL
Icterus Threshold 66 mg/dL
Lipemia Threshold 1500 mL
Other QNS, contaminated, improperly Labeled, improper specimen type

Specimen Stability

Ambient 8 hours
Refrigerated (4°C to 8°C) 7 days
Frozen(-40°C to 0°C) 6 months

Performance Information

Days and Time Performed 24/7
Expected Turn Around Time Routine: 4 hours
Stat Availability No
Performing Bench UH Chemistry
Methodology/Method Description

Roche Cobas – Sandwich principle assay

CEA values determined on patient samples by different testing procedures cannot be directly compared with one another and could be the cause of erroneous medical interpretations.

CPT Codes

82378