Insulin (402)

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Category:

CPT Code:

82947

Test Type: 1.0 mL Serum Kit Based
Stability Time:

Stability

Refrigerated:  5 days

Overview:

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

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.

Collection Details:

Collection Instructions:

Preferred Specimen

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

Transport Temperature

Refrigerated (ship on frozen cold packs