Frequently asked questions on important topics / What tests are recommended for diagnosing diabetes?

A fasting blood plasma glucose test, performed first thing in the morning, is the preferred test for diagnosing type 1 or type 2 diabetes. However, a diagnosis of diabetes can be made based on a random (i.e., any time of day) plasma glucose test and an oral glucose tolerance test (OGTT). The findings should be confirmed with a follow up test on a subsequent day.

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