HbA1c dual reporting starts

Dual reporting of HbA1c results begins this week.

Results will be reported as the usual percentage figure and in the new mmol/mol units. Both units will be reported for two years.

The change is being made in response to a call by the International Federation of Clinical Chemistry and Laboratory Medicine for all countries to adopt the same measurement to make it easier to compare HbA1c results between laboratories throughout the UK and worldwide.

The new units give values considerably higher than the percentage figure:

  • 6.0% = 42 mmol/mol
  • 6.5% = 48 mmol/mol
  • 7.0% = 53 mmol/mol
  • 7.5% = 59 mmol/mol
  • 8.0% = 64 mmol/mol
  • 9.0% = 75 mmol/mol

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