The

key test in the evaluation of carbohydrate metabolism disorders is the

determination of blood glucose level =

In

whole blood, which is the most frequently examined, the level is

If we

measure a fasting plasma glucose concentration higher than or equal to 7 mmol/L, it is likely that the patient suffers from a serious metabolic disease:

Moreover,

if a patient has symptoms such as polyuria, polydipsia or ketonuria, this is

considered confirmation of the diagnosis.