Diabetes Diagnostic Guidelines

Question 1

What is the fasting glucose cut off for diabetes?

Answer 1

> =7mmol/l

Question 2

What is the random glucose cut off for diabetes?

Answer 2

> =11.1

Question 3

What is the glucose cut off 2 hours after OGTT?

Answer 3

> =11.1

Question 4

What is the HbA1c diagnostic cut off?

Answer 4

> =48mmol/l

Question 5

If a patient has symptoms of diabetes, how many times do they need to have a high glucose on testing to be diagnosed?

Answer 5

Once

Question 6

If a patient has no symptoms of diabetes, how many times do they need to have a high glucose on testing to be diagnosed, and should this be the same test or different test?

Answer 6

2 times
Same test

Question 7

What are the fasting and 2 hours post OGTT blood glucose levels used to diagnose gestational diabetes?

Answer 7

a fasting plasma glucose level of 5.6mmol/l or above or
a 2-hour plasma glucose level of 7.8mmol/l or above.

Question 8

When should HbA1c not be used for diagnosing diabetes?

Answer 8

Children and young people less than 18 years of age.
Pregnant women or women who are 2 months postpartum.
People with symptoms of diabetes for less than 2 months.
People at high diabetes risk who are acutely ill.
People taking medication that may cause hyperglycaemia (for example long-term corticosteroid treatment).
People with acute pancreatic damage, including pancreatic surgery.
People with end-stage renal disease
People with HIV infection.