Is a 7-year-old child with an empty stomach having a blood glucose level of 6.8 diabetic?

Patient's question:

Main symptoms: Frequent urination, excessive thirst
Onset time: Unknown
Laboratory test results: Unknown

Doctor's answer:

In this case, it is possible to suspect type 1 diabetes. The onset age and symptoms are quite suspicious. It is recommended to continue with the following tests: glutamic acid decarboxylase antibody, urine sugar, blood glucose, glucose tolerance, glycosylated hemoglobin, and C-peptide.