ADA diabetes diagnosis guidelines 2015
The American Diabetes Association's (ADA's) updated 2015 guidelines include recommendations for screening and criteria for the diagnosis of diabetes.
The ADA recommends using these 4 criteria for diabetes diagnosis (4 testing options):
- Hemoglobin A1C ≥6.5%* - Perform in laboratory using National Glycohemoglobin Standardization Program (NGSP)-certified method and standardized to the Diabetes Control and Complications Trial (DCCT) assay.
- Fasting plasma glucose (FPG) ≥126 mg/dL (7.0 mmol/L)* - Fasting defined as no caloric intake for ≥8 hours.
- 2-hour plasma glucose (PG) ≥200 mg/dL (11.1 mmol/L) during oral glucose tolerance
test (OGTT) (75-g)* - Performed as described by the World Health Organization (WHO), using glucose load containing the equlivalent of 75 g anhydrous glucose dissolved in water.
- Random plasma glucose (PG) ≥200 mg/dL (11.1 mmol/L) - In persons with symptoms of hyperglycemia or hyperglycemic crisis.
* In the absence of unequivocal hyperglycemia results should be confirmed using repeat testing.
* Unless clinical diagnosis is clear, same test to be repeated using a new blood sample for confirmation.
* Two discordant results? Result above cutpoint should be repeated.