It has been recommended by a UK expert group that HbA1c values between 42 and 47 mmol/mol (6.0-6.4%) indicate that a person is at high risk of type 2 diabetes. There is a continuum of risk across a range of sub-diabetic HbA1c levels and people with an HbA1c below 42 mmol/mol (6.0%) may also be...