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Laboratory Medicine

Test Directory / HbA1c



Common AbbreviationsNA
Tube typeEDTA
Clinical IndicationMeasurment of HbA1c is used in the diagnosis and monitoring of diabetes mellitus.
Specimen TypeBlood
Sample typeEDTA Whole blood
Minimum Volume1mL
Special PrecautionsNo special requirements
Stability72 hours at 25°C and 14 days at 4°C
Turnaround TimeInpatient: 24 hours Outpatient/ GP: 24 hours
LaboratoryYork and Scarborough
Reference IntervalNon diabetic: < 42mmol/mol Please refer to WHO criteria
LimitationsVariant haemoglobin fractions or increased/decreased red cell turnover may produce results where HbA1c does not correspond to average blood glucose levels.
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