I wonder if these test was done as directed by a doctor ? Well the high HbA1C of this level is suggestive of prediabetes. But as your child is 22 months old, more tests have to be done to make sure if he is a case of Type 1 Diabetic which also raises doubts of any other family member is diabetic, like father or grand father, The balanitis also arises doubts of sugar in urine. It is inappropriate to make any authoritative comment with just one report as why the report was taken itself is information needed to assess the condition. I would do a FBS, 1/2 hourly Glucose tolerance test after a glucose feed and evaluate the whole family history. Please reassess with your doctor who ordered the test and please com back to me Regards.