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HelpTest Code LAB0205666 Cancer Antigen 125 (CA 125), Plasma or Serum
Methodology
Chemiluminescent Microparticle Immunoassay (CMIA)
Useful for the follow-up management of patients undergoing cancer therapy, especially ovarian carcinoma.
Performing Laboratory
CentraCare Laboratory Services
Specimen Requirements
Submit only 1 of the following specimens:
Specimen Type: Plasma
Container/Tube: Green top (Lithium heparin & PST)
Specimen Volume: 0.5 mL
Specimen Minimum Volume: 0.25 mL
Collection Instructions: Label specimen appropriately (plasma).
Specimen Type: Serum
Container/Tube: Gold top (SST) & Red top (Serum & No Additive)
Specimen Volume: 0.5 mL
Specimen Minimum Volume: 0.25 mL
Collection Instructions: Label specimen appropriately (serum).
If collecting using a red top with no gel separator, the serum must be removed within 1 hour of collection.
Specimen Transport Temperature
Refrigerated: 1 week
Reference Values
<35 U/mL
Results cannot be interpreted as absolute evidence of the presence or absence of disease. Plasma/serum markers are not specific for malignancy and values may vary by method.
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
86304