Cardio IQ® Insulin

Test Code
91731


CPT Codes
83525

Preferred Specimen
1 mL serum


Patient Preparation
Fasting specimen required

Minimum Volume
0.5 mL


Instructions
Collect blood by venipuncture into plain tubes (without anticoagulant); separate the serum from cells.
Unable to add insulin testing unless sample was submitted frozen.


Transport Container
Transport tube


Transport Temperature
Refrigerated (cold packs)


Specimen Stability
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 28 days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis • Plasma • Grossly icteric


Methodology
Immunoassay (IA)

Setup Schedule
Tues-Sat


Report Available
2-3 days


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.


Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042



Last Updated: November 6, 2024


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.