Insulin Resistance (cont.)
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Insulin Resistance Diagnosis
A physician can identify individuals who are likely to have insulin resistance with a detailed patient history, physical examination, and laboratory testing.
In general clinical practice, glucose levels in conjunction with fasting insulin levels provide the physician with information as to whether insulin resistance is present, or not present, in patients without diabetes. A firm diagnosis cannot be made simply based on this, since the lab techniques for measuring insulin can vary, and there is no absolute value used for the definition. However, an insulin level above the upper quartile in the fasting state in someone without diabetes is considered abnormal. In addition, an oral glucose tolerance test (OGTT) can be used to detect insulin resistance and is more sensitive for detecting milder/earlier disease. It involves drinking a known amount of simple sugar and measuring blood glucose and insulin levels at baseline as well as one and two (and sometimes three) hours after drinking.
Medically Reviewed by a Doctor on 7/31/2014
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