No excess.
The normal fasting blood sugar level is considered to be between 3.3 and 5.5 mmol/litre. Two hours after a meal, the glucose level may rise to 7.8 mmol/litre.
If fasting levels are between 5.5 and 6.7 mmol/litre and post-meal levels are between 7.8 and 11.0 mmol/litre, impaired glucose tolerance is diagnosed.
Diabetes mellitus is diagnosed if fasting levels exceed 6.7 mmol/litre and two hours after a meal exceed 11.0 mmol/litre.
----------------------------------------------------------------------------
Fasting:
Normal: 3.3 - 5.5 mmol/l
Prediabetes: 5.6 - 7 mmol/l
Diabetes mellitus: 7 mmol/l and above
-----------------------------------------------------
The normal glucose curve is as follows:
fasting – plasma glucose level less than 6.1 mmol/l,
two hours after oral glucose intake, the level should be less than 7.8 mmol/l.
-----------------------------------------------------
A glucose level exceeding 11 mmol/l after two hours indicates diabetes mellitus.
-----------------------------
If the fasting glucose level is 7.0 mmol/l or higher, and two hours after a meal it is 11.1 mmol/l or higher,
this indicates that the person has serious issues with the pancreas, which have led to the development of diabetes mellitus.
A fasting blood sugar concentration of less than 7.0 mmol/l but more than 5.5 mmol/l,
and two hours later in the range of 7.8–11.0 mmol/l,
indicates impaired glucose tolerance (a prediabetic state).