Oral glucose tolerance test:
In cases of doubtful diagnosis, a glucose curve is carried out (determination of blood glucose arranged serially) to assess the capacity of the organism to process glucose.
This test can last for up to 3 hours. First, a blood sample is collected, after which you will have to have a very sweet drink which contains 75 g of glucose. Blood samples are taken every 30 to 60 minutes after drinking the solution.
Diabetes is diagnosed if the level of glucose is above 200 mg/dl 2 hours after ingesting the special sugary drink.