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Diagnosing diabetes
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Diabetes
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Fasting plasma glucose
7.0
mmol/L or above
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Random plasma glucose
11.1
mmol/L or above in symptomatic patients
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OGTT with plasma glucose
11.1
mmol/L or above in the 2-hour sample
Borderline state of impaired glucose homeostasis
-
Impaired fasting glucose (IFG):
fasting plasma glucose
6.1
mmol/L or above
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Impaired glucose tolerance (IGT):
OGTT with plasma glucose
7.8-11.1
mmol/L in the 2-hour sample
In the absence of symptoms the diagnosis must be confirmed by a
second diagnostic value on a separate day
Glucose tolerance test
PAL
Classification of diabetes
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Type 1 diabetes
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Immune-mediated
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Idiopathic
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Type 2 diabetes
Who should be tested and when
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Routine screening for all adults over 45
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Obese patients >20% above ideal weight
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Patients with first degree relatives with diabetes
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High risk ethnic groups
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Patients who have had gestational diabetes
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Patients who have had high birth weight babies >9lbs
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Hypertensive patients
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Patients with hyperlipidaemia
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Previous IFG or IGT
Diabetes
Raised blood glucose concentration