Is there a seasonal variation in HbA1c in Australia?

Conclusion Whereas in the Northern hemisphere the HbA1c does exhibit seasonal variation, this was not apparent in a temperate climate. Specific data are required during pregnancy. HbA1c could be considered as an alternative diagnostic test during pregnancy to potentially overcome the changes in prevalence with seasons with GTT.
Source: Australasian Medical Journal - AMJ - Category: General Medicine Source Type: research