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Cardio IQ® Insulin
Test Code91731
CPT Codes
83525
Preferred Specimen
1 mL serum
Patient Preparation
Overnight fasting is required
Minimum Volume
0.5 mL
Instructions
Collect blood by venipuncture into plain tubes (without anticoagulant); separate the serum from the cells. Unable to add INSULIN testing unless sample was submitted frozen.
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 8 hours
Refrigerated: 7 days
Frozen: 28 days
Refrigerated: 7 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Plasma • Grossly icteric
Methodology
Immunoassay (IA)
Setup Schedule
Night Sets up 5 days a week.
Clinical Significance
Insulin is useful in diagnosing hyperinsulinemia in hypoglycemic patients. Hyperinsulinemia may be due to an insulin-producing tumor (insulinoma), syndrome of insulin resistance, or persistent hyperinsulinemic hypoglycemia of infancy.
