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What are the tests done to diagnose Diabetes?

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posted Jun 14, 2016 by anonymous

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1 Answer

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Any test done for diagnosis of diabetes must be repeated twice within the week to get an accurate and confirmed result. The three important tests used are:

Fasting Plasma Glucose Test (FPG)

This test is considered to be the most accurate and reliable blood test to diagnose diabetes. It requires one to be empty stomach for at least 8 hours before the test is done, thus done early in the morning before breakfast. Following are the levels which show the normal and diabetic range:

Normal -> 99 mg/dl and below (milligrams per decilitre)
Diabetes -> 126 mg/dl and above

Oral Glucose Tolerance Test (OGTT)

This test is slightly more sensitive compared to FPG. This test also requires one to be fasting 8 hours before the test is done. Once the blood is withdrawn for check-up, the patient is given an oral glucose solution, containing 75 grams of glucose in a glass of water and the blood is withdrawn for check-up again post 2 hours. Below are the levels which show the normal and diabetic range:

Normal -> 139 mg/dl and below
Diabetes -> 200 mg/dl and above

Glycated haemoglobin Test (A1C)

This test is done to get an idea on the average glucose levels over the past 2-3 months. It checks for the percentage of glucose attached to hemoglobin in the blood. More the glucose attached, more the impact of diabetes. Below are the levels which show the normal and diabetic range:

Normal -> 5.7 % and below
Diabetes -> 6.5% and above

answer Jun 14, 2016 by Pallavi
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