Insulin, Serum/Plasma


In addition to glucose control, insulin also controls lipid and protein metabolism, and exerts a determinant role for cell growth and differentiation. The function of insulin is mediated by binding to its receptor expressed on all tissue.


Insulin levels are increased in insolinoma, non-insulin-dependent diabetes(type II), insulin overdose, liver disease, Cushing’s disease, galactose intolerance, familial fructose intolerance and obesity. Decreased levels are found in untreated or inadequately treated type I diabetes mellitus and hypopituitarism.

Sample Type, Quantity & Conditions

1 ml Serum 1 ml Li-Heparin, K3-EDTA, or Sodium Citrate Plasma Stability: 24 Hours at 2-8 °C 6 Months at -20°C

Special Precautions

12 Hrs fasting is required for Insulin Fasting test. Freeze only once. Avoid haemolysis.

Normal Range

Fasting: 2.6 - 24.90 μU/mL 18.06 - 172.93 pmol/L

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