Cardio IQ® Insulin

Test Code

91731

CPT Code(s)

83525

Test Code

91731

CPT Code(s)

83525

Not offered in Quest Diagnostics Nichols Institute (IFD) – San Juan Capistrano | Quest Nichols Institute -San Juan Capistrano, CA. Please provide SERVICE AREA INFORMATION to find available tests you can order.

In-home collection may be available in your area for purchase through Quest Mobile.

Clinical Significance

Cardio IQ® Insulin - 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.

Test Resources

None found for this test
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Test Details

Patient Preparation

Fasting specimen required

Methodology

Immunoassay (IA)

Reference Range(s)

≤18.4 uIU/mL

Risk	uIU/mL
Optimal	≤18.4
Moderate	N/A
High	>18.4

Adult cardiovascular event risk category cut points (optimal, moderate, high) are based on Insulin Reference interval studies performed at Quest Diagnostics in 2022.

Alternative Name(s)

Insulin, Cardio IQ®,CardioIQ®

LOINC® Codes, Performing Laboratory

Service Area must be determined

Patient Preparation

Fasting specimen required

Methodology

Immunoassay (IA)

Reference Range(s)

≤18.4 uIU/mL

Risk	uIU/mL
Optimal	≤18.4
Moderate	N/A
High	>18.4

Adult cardiovascular event risk category cut points (optimal, moderate, high) are based on Insulin Reference interval studies performed at Quest Diagnostics in 2022.

Alternative Name(s)

Insulin, Cardio IQ®,CardioIQ®

LOINC® Codes, Performing Laboratory

Service Area must be determined

Preferred Specimen(s)

1 mL serum

Minimum Volume

0.5 mL

Collection 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

Hemolysis • Plasma • Grossly icteric

Setup Schedule

Service Area must be determined

Preferred Specimen(s)

1 mL serum

Minimum Volume

0.5 mL

Collection 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

Hemolysis • Plasma • Grossly icteric

Setup Schedule

Service Area must be determined

In-home collection may be available in your area for purchase through Quest Mobile.

Test Details

Clinical Significance

Test Resources

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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