Type 2 Diabetes Diagnosis

Type 2 diabetes is often diagnosed in a doctor's office or other outpatient setting after chronic infection or other initial symptoms raise the suspicion of diabetes. Less frequently, a diagnosis is made in a hospital or emergency room after the extremely high blood glucose levels of undetected diabetes causes severe illness.

The National Institutes of Health (NIH) recommends that people age 45 and older consider getting tested for diabetes, and the American Diabetes Association (ADA) suggests a routine test every three years for those over 45, particularly if they are overweight, or for those under 45 if they are overweight and have another diabetes risk factor. Those with additional diabetes risk factors may require more frequent testing; talk to your doctor about the diabetes screening strategy that is right for you.

The preferred blood test for diagnosing type 2 diabetes is the fasting plasma glucose test. The test requires an eight-hour fast (no food or drink except water), after which a blood draw is performed. It is usually done in the morning. Other accepted tests for the diagnosis of type 2 diabetes include a random plasma glucose test (a blood draw taken at any time of the day) and an oral glucose tolerance test (OGTT; blood draws taken at intervals up to three hours after a patient consumes a drink of 75 grams of glucose).

The following lab values are the ADA practice guidelines for the diagnosis of diabetes:

The ADA also maintains that a definitive diabetes diagnosis requires a second positive test performed on a different day.

 

Reviewed by Francine Kaufman, MD. 4/08

Last Modified Date: March 01, 2013

All content on dLife.com is created and reviewed in compliance with our editorial policy.

More On This Topic

No items are associated with this tag

Sign up for FREE dLife Newsletters

dLife Membership is FREE! Get exclusive access, free recipes, newsletters, savings, and much more! FPO

Congratulations!
You are subscribed!
Congratulations!
You are subscribed!
Congratulations!
You are subscribed!
152 Views 0 comments
by Carey Potash
An update on NightScout. When we last left, I was so frustrated with it that I was about ready to march right up to that cloud (if I could find the right one) and give someone or something a piece of my mind. Now … I wanna marry it! And all it took was a $3.50 cable. The streaming connection to Charlie’s Dexcom has been nearly flawless since receiving our new cable in the mail and I...