For each recommended test, this tool will assess whether a result indicates a diagnosis of diabetes or
prediabetes.
Test
Test result
Result
DCCT, Diabetes Control and Complications Trial; FPG, fasting plasma glucose; IFG, impaired fasting glucose; IGT, impaired glucose tolerance; OGTT, oral glucose tolerance test; WHO, World Health Organization; 2-h PG, 2-h plasma glucose.
*In conditions associated with increased red blood cell turnover, such as sickle cell
disease, pregnancy (second and third trimesters), glucose-6-phosphate dehydrogenase
deficiency, hemodialysis, recent blood loss or transfusion, or erythropoietin therapy,
only plasma blood glucose criteria should be used to diagnose diabetes
** For all three tests, risk is continuous, extending below the lower limit of the range and becoming disproportionately greater at the higher end of the range.
***In the absence of
unequivocal hyperglycemia, diagnosis requires two abnormal test results from the same
sample or
in two separate test samples.
#See
table 2.3 for Criteria for testing for diabetes or prediabetes in asymptomatic adults