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Proinsulin Response to Glucose, 8 Specimens
Test Code15856
CPT Codes
84206 (x8)
Preferred Specimen
1 mL serum [x8]
Patient Preparation
Overnight fasting is required
Minimum Volume
0.5 mL for each timed specimen
Instructions
For each timed specimen submitted, each tube must be clearly marked with time drawn. Submit all tubes with one test request form.
Draw baseline fasting specimen. Administer 75 grams oral Glucose. Glucose is not supplied by Quest Diagnostics, Incorporated, Nichols Institute.
Draw baseline fasting specimen. Administer 75 grams oral Glucose. Glucose is not supplied by Quest Diagnostics, Incorporated, Nichols Institute.
Transport Temperature
Frozen
Specimen Stability
Room temperature: 24 hours
Refrigerated: 72 hours
Frozen: 90 days
Refrigerated: 72 hours
Frozen: 90 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received room temperature
Methodology
Immunoassay (IA)
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 the FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
A.M. Sets up 2 days a week.
Clinical Significance
For diagnosis and monitoring therapy in patients with insulinomas.
