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Test Name

Insulin, Free (Bioactive)

CPT Code(s)

83527

Methodology

Immunoassay (IA)

Reference Range(s)

Insulin, Free 1.5-14.9 uIU/mL
Insulin levels vary widely in specimens taken from non-fasting individuals.

Insulin analogues may demonstrate non-linear cross-reactivity in this assay. Interpret results accordingly.

Clinical Significance

The free insulin measurement is helpful in interpreting blood sugar concentration and its relationship to insulin injections in insulin-treated patients with insulin antibodies.

To view specimen requirements and codes please Select a regional laboratory.

Not sure which laboratory serves your office? Call us 866-MYQUEST (866-697-8378)

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 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 payer being billed.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.

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136700
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Insulin, Free (Bioactive)
36700