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  • Test Details
  • Lab Values
  • Clinical Significance
  • Treatment Options
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Explore this test

Test Code 402

Test Details

Insulin

Insulin is a hormone responsible for the transportation and storage of glucose in cells. It regulates glucose levels in blood. This test measures the amount of insulin in blood.

Methodology

Immunoassay

Patient Preparation

None

Preferred Specimen

1.0 mL serum (0.5 mL minimum) collected in serum separator tube (SST/Tiger Top)

Alternate Specimen

None

Transport Temperature

Refrigerated (ship on frozen cold packs)

Stability

Refrigerated:  5 days

Lab Values

Lab Values

Insulin

  • Low : <5 µU/mL*
    *An Insulin test result of < 5 uU/ml is normal in a non-diabetic, but low if the patient has diabetes (consistent with type 1 diabetes).
  • Optimal: 5-15 µU/mL
  • High: >15 µU/mL
Test Details
Clinical Significance

Clinical Significance

Insulin

Insulin may be used in conjunction with glucose or glucose tolerance test to:

  • Diagnose insulin resistance
  • Diagnose insuloma
  • Monitor amount of endogenous insulin production
  • Determine when a type 2 diabetic may need to start insulin therapy

 

Presence of insulin resistance indicates a higher risk to develop:1

  • Type 2 diabetes
  • Hypertension
  • Hyperlipidemia
  • Heart disease
  • High doses of biotin (> 5 mg/day) may interfere with assay results. Patient assumed to be refraining from biotin supplementation for at least 3 days prior to blood draw.

References:

  1. Haff ner S. Relationship of Metabolic Risk Factors and Development of Cardiovascular Disease and Diabetes. Obesity. 2006;14(Suppl 3):121S-127S.
Lab Values
Treatment Options

Treatment Options

Insulin

  • Lifestyle modification
  • Glucose stabilizing and/or insulin sensitizing medications
  • Glucose lowering medications
Clinical Significance