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HelpTest Code LAB1232023 Carbohydrate Antigen 19-9 (CA 19-9), Pleural Fluid
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
CA 19-9, Pleural FluidSpecimen Type
Pleural FluidSpecimen Required
Patient Preparation: For 12 hours before specimen collection do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.
Container/Tube: Plain, plastic, screw-top tube
Specimen Volume: 2 mL
Reject Due To
| Gross hemolysis | Reject |
| Gross icterus | OK |
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Pleural Fluid | Frozen (preferred) | 90 days | |
| Refrigerated | 14 days | ||
| Ambient | 7 days |
Specimen Minimum Volume
0.5 mL (Samples <0.5 mL may be rejected)
Day(s) Performed
Monday through Saturday
Specimen Retention Time
14 daysReport Available
1 to 3 daysReference Values
An interpretive report will be provided.
Useful For
An adjuvant to cytology and imaging studies to differentiate between nonmalignant and malignant causes of pleural effusions
CPT Code Information
86301
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| PF199 | CA 19-9, Pleural Fluid | 19163-5 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| P199 | CA 19-9, Pleural Fluid | 19163-5 |
| SITE8 | Site | 39111-0 |
Forms
If not ordering electronically, complete, print, and send an Oncology Test Request (T729) with the specimen.