Clinical Chemistry - Changing Values - Mededcoventry.com

"Changing Values. When does 6.5 = 48? Is this a well controlled diabetic? Date. 
HbA1c mmol/mol. 23/04/2011. 45. 01/11/2010. 48. 12/01/2010. 55. 15/11/2009."

https://www.mededcoventry.com/Consultants/Programmes/Grand_Round_History/answers_-_hba1cgrand_rndcameo_dr_steve_smith.ppt