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.

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!
29 Views 0 comments
by Nicole Purcell
I have spent the past three days dealing with an evil stomach bug. Gastro issues, bloodsugar issues and a headache for the ages - along with a low grade fever - left me in bed trying (and mostly failing) to rest. I'm back at work today after two sick days, but still on slo-mo. Weird bloodsugars are always my "getting sick" miner's canary. Everyone knows what a miner's canary is, right? Back in the day, miners would keep a caged bird (often a canary) with them in the mine....