Thank you for your query.
Although 10.9 mmol/L (around 195 mg/dL) glucose
level is high, it alone is not a diagnosis of diabetes
. You should test it after eight hours of fasting to have a better idea.
Levels of glucose fluctuate during the day, specially after meals and during exercises.
I must tell you though that the whole high glucose-hyperactivity association is a myth. What can happen is irritability related to a severe low blood sugar
count. High glucose does not lead to hyperactivity (studies have shown that).
I suggest you to do a morning test (before the first meal of the day), and take him to a doctor if the value is higher than 5.5 mmol/L.
Have a nice day and good luck.