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Test Code CA 125 CA 125

Aliases

Cancer Antigen 125

Patient Preparation

No special patient preparation required

Collection Method

Venous collection

Minimum Volume

  • Adults: 1 mL
  • Pediatric: 0.8 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)
  • Dark Green Top (sodium heparin)

 

Reference or Target Ranges

2 – 35 U/mL

Reportable Units

U/mL

Critical Value

Not defined for this assay

Reasons for Rejection

Hemolysis Threshold 3200 mg/dL
Icterus Threshold 66 mg/dL
Lipemia Threshold 2000 mL
Other QNS, contaminated, improperly Labeled, improper specimen type

Specimen Stability

Ambient 8 hours
Refrigerated (4°C to 8°C) 5 days
Frozen(-40°C to 0°C) 3 months

Performance Information

Days and Time Performed 24/7
Expected Turn Around Time Routine: 4 hours from arrival in the lab
Stat Availability No
Performing Bench UH Chemistry
Methodology/Method Description Roche Cobas – Two site sandwich assay

CA-125 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

86304