HbA1c
You will hopefully all know that HbA1c units are changing to IFCC units (mmol/mol) from beginning of October with %ages no longer reported.
Attached are the Ministry documents for providers and patients related to the change, plus NZSSD conversion tables including the actual equations.
Ministry printed resources are available and you should receive hard copies within the next few days. A copy of the Ministry announcement will follow shortly.
NZSSD has also widely consulted over the past year about the use of HbA1c in diagnosis of type 2 diabetes and general aspects of screening/diagnosis.
A new position statement is attached. Please read this as it differs from ADA and other authorities, and uses the new units.
These documents are being released to specialist teams now to allow study and familiarity before general release next week and implementation over October 1-3.
NZSSD is very grateful to the many who have contributed to their development and to the complex changeover arrangements,
and especially to Drs Geoff Braatvedt, Michael Crooke and Chris Florkowski who have borne the brunt of the considerable workload.
Tim Cundy Paul Drury
President Medical Director
On behalf of the NZSSD Executive
NZSSD Executive summary of position statement
NZSSD: Reporting and interpreting glycated haemoglobin (HbA1c) results/values
NZSSD: HbA1c full conversion tables
MoH: HbA1c laboratory data formal change (Provider info)
MoH: What is the new HbA1c? (Patient info sheet)
Diagram from Department of Medical Illustration, Auckland City Hospital