https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3168743/table/Tab2/
A fasting blood sugar level from 100 to 125 mg/dL (5.6 to 6.9 mmol/L) is considered prediabetes. If it's 126 mg/dL (7 mmol/L) or higher on two separate tests, you have diabetes.
A 2 hour sugar test, A blood sugar level less than 140 mg/dL (7.8 mmol/L) is normal. A reading of more than 200 mg/dL (11.1 mmol/L) after two hours indicates diabetes. A reading between 140 and 199 mg/dL (7.8 mmol/L and 11.0 mmol/L) indicates prediabetes.
This way you can see the conversions.
BOTTOM LINE: Average person, or the 7, went from 9.2 mmol/L to 5.7 mmol/L +/- .5 on fasting glucose test.