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Proinsulin : 760
Test CodePINSUL or 760
Alias/See Also
Precursor to Insulin
CPT Codes
84206
Instructions
Overnight fasting is required.
Serum separator tube.
Serum separator tube.
Transport Container
Centrifuge serum separator tube and aliquot the serum into a standard transport tube, 1 mL (Min: 0.5 mL).
Transport Temperature
Frozen.
Specimen Stability
After separation from cells: Ambient: 24 hours; Refrigerated: 72 hours; Frozen: 90 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature
Methodology
Enzyme Linked Immunoassay
Setup Schedule
Monday & Friday
Report Available
5-8 days (From receipt at performing laboratory)
Limitations
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.
Reference Range
less than or equal to 18.8 pmol/L
Clinical Significance
Proinsulin is used to detect and monitor excessive hormone production from insulinomas.
Performing Laboratory
Quest Diagnostics
