Impaired fasting glycaemia

Impaired fasting glycaemia (IFG) is a pre-diabetic state of dysglycemia, associated with insulin resistance and increased risk cardiovascular pathology, although of lesser risk than Impaired glucose tolerance (IGT). IFG often progresses to type 2 diabetes mellitus, a recent study citing the average time for progression as less than three years.^[1] IFG is also a risk factor for mortality.^[2]

Additional recommended knowledge

Weighing the right way

Essential Laboratory Skills Guide

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It is characterised by an intermediately raised fasting glucose level, but less than would qualify for type 2 diabetes mellitus. On challenging with an oral glucose tolerance test, normal blood glucose levels are maintained after 2 hours, unlike IGT.

Criteria

• fasting glucose level > 5.6 mmol/l (100 mg/dl) and < 6.9 mmol/l (125mg/dl).^[3][4]

The criteria will continue to change as many endocrinologists believe an impaired fasting glycose may eventually include fasting glucose between a high 95-100 mg/dl.

References

See also

• Impaired glucose tolerance
• Glucose tolerance test