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CA 19-9, Pleural Fluid
Test Code17642
CPT Codes
86301
Preferred Specimen
3 mL pleural fluid collected in a sterile transport tube
Minimum Volume
2 mL
Transport Temperature
Frozen
Specimen Stability
Room temperature: 72 hours
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Lipemia
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Wed; Report available: 2-9 days
Reference Range
<37 U/mL
Clinical Significance
Measurement of pleural fluid tumor markers on patients with negative cytologic analysis may indicate the need for confirmatory pleural biopsy