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Proinsulin
Test CodePROIN
Quest Code
760
Alias/See Also
760
CPT Codes
84206
Preferred Specimen
1 mL serum
Patient Preparation
Overnight fasting is required
Minimum Volume
0.5 mL
Other Acceptable Specimens
None
Transport Temperature
Frozen
Specimen Stability
Serum:
Room temperature: 24 hours
Refrigerated: 72 hours
Frozen: 6 months
Room temperature: 24 hours
Refrigerated: 72 hours
Frozen: 6 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature
Methodology
Enzyme Linked Immunosorbent Assay (ELISA)
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, Fri; Report available: 5-8 days
Reference Range
≤18.8 pmol/L
Clinical Significance
Proinsulin is used to diagnose insulinomas and to monitor therapy in patients with insulinomas.
Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92690-6130