General Practitioner's surgery is the place where diabetes is diagnosed probably the most often. In case of MODY (Maturity Onset Diabetes of the Young) this is true more likely due to its characteristic features - diabetes onset in early age (before the age of 25 years) and usually mild hyperglycaemia.
Despite a growing awareness of this relatively common type of diabetes, up to 90% of patients are classified incorrectly and remain hidden for a long time or permanently under the diagnosis of other types of diabetes, especially type 1 or 2. The aim of this article is to summarize the diagnostic criteria of MODY to help its early diagnosis, especially in those MODY patients concealed under the previously mislabelled type of diabetes.