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Vasoactive Intestinal Polypeptide (VIP), Plasma
Test Code920
CPT Codes
84586
Preferred Specimen
1 mL plasma collected in an EDTA (lavender-top) tube
Patient Preparation
Fasting is preferred
Minimum Volume
0.75 mL
Instructions
Centrifuge and freeze immediately
Transport Temperature
Frozen
Specimen Stability
Room temperature: 4 hours
Refrigerated: 24 hours
Frozen: 6 months
Refrigerated: 24 hours
Frozen: 6 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Lipemia • Grossly icteric
Methodology
Radioimmunoassay (RIA)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: Mon; Report available: 8-12 days
Reference Range
<78 pg/mL
Clinical Significance
Vasoactive Intestinal Polypeptide is used to diagnose watery diarrhea syndrome or to assess patients with suspected multiple endocrine neoplasia type 1 (MEN1).