It is performed in certain situations; e.g., when fasting was not possible, a diabetic person is symptomatic, blood has been drawn for some other test (for which fasting was not required) and high glucose levels are to be ruled out in the same sample. This test is not a routine screening test for diabetes but is performed for the following reasons:
As a part of healthcare screening in those above 40 years.
The test is typically performed under following situations:
In a known diabetic:
When the doctor suspects diabetes in person with:
Blood Sugar levels below 70 mg/dL
Blood Sugar below 110 mg/dL
Blood Sugar above 110 mg/dL
Blood Sugar above 200 mg/dL
After finding abnormal results in this test other tests will be needed to establish the diagnosis of diabetes and to differentiate the types of diabetes.