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HelpTest Code LAB1232051 Alpha-Fetoprotein (AFP), Peritoneal Fluid
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
AFP, Peritoneal FluidSpecimen Type
PeritonealSpecimen Required
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 |
|---|---|---|---|
| Peritoneal | Frozen (preferred) | 90 days | |
| Ambient | 7 days | ||
| Refrigerated | 7 days |
Specimen Minimum Volume
0.5 mL (Samples <0.5 mL may be rejected)
Day(s) Performed
Monday through Saturday
Specimen Retention Time
12 monthsReport Available
1 to 3 daysReference Values
An interpretive report will be provided.
Useful For
An adjunct to cytology to differentiate between malignancy-related ascites and benign causes of ascites formation
CPT Code Information
86316
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| AFPPT | AFP, Peritoneal Fluid | 49761-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| AFPPN | AFP, Peritoneal Fluid | 49761-0 |
| SITEF | Site | 39111-0 |
Supportive Data
An in-house study was performed to select a clinical decision limit to differentiate between malignancy-related and benign causes of ascites with high specificity. The study included 83 cases of benign ascites and 54 cases of malignancy-related ascites. Within the malignancy-related ascites, there were 12 cases of hepatocellular carcinoma (HCC). Using a clinical decision limit cutoff of greater than 6 ng/mL, the specificity was 96% for the benign ascites group. The sensitivity for the HCC was 58%.
Forms
If not ordering electronically, complete, print, and send an Oncology Test Request (T729) with the specimen.