[Diabetes mellitus: definition, classification and diagnosis]

Area of Science:

• Endocrinology
• Metabolic Disorders
• Clinical Biochemistry

Background:

• Diabetes mellitus is a group of metabolic disorders characterized by hyperglycemia.
• Accurate classification and diagnosis are crucial for effective diabetes management.
• Existing classifications and diagnostic methods require clear summarization for clinical application.

Purpose of the Study:

• To describe current classifications of diabetes mellitus (types 1-4).
• To compare key features of type 1 and type 2 diabetes for improved differentiation.
• To summarize biochemical diagnostic criteria and the role of HbA1c in diabetes diagnosis.

Main Methods:

• Review of current diabetes mellitus classifications.
• Comparative analysis of clinical and biochemical features of type 1 and type 2 diabetes.
• Summary of diagnostic criteria including fasting blood glucose, oral glucose tolerance tests, and hemoglobin A1c (HbA1c).

Main Results:

• Detailed description of diabetes mellitus types 1-4.
• Highlighted differences between type 1 and type 2 diabetes.
• Summarized biochemical diagnostic criteria for diabetes.

Conclusions:

• Clearer discrimination between diabetes types is achievable through comparative analysis.
• Standardized biochemical diagnostic criteria are essential for accurate diabetes diagnosis.
• The findings support the Austrian Diabetes Association's recommendations for clinical diabetes treatment.