Diabetes: Whittington HbA1c Reporting Unit Change 

From 6 January 2020, the Whittington laboratory has announced that it will be implementing a new method for measuring HbA1c to improve performance and ensure provision of high-quality results. The change in measurement method will mean that HbA1c results will be reported in the IFCC units of mmol/mol only (DCCT % units will no longer be provided). To help with conversions you can use the following resources.

HbA1c conversion chart

HbA1c conversion calculator