Early identification of autoimmune diabetes is essential for guiding appropriate therapy. A cross-sectional study published in the Journal of Diabetology examined the prevalence and metabolic features of LADA among South Indian patients initially diagnosed with type 2 diabetes.

The study included 180 adults aged 25 to 40 years who underwent detailed clinical and biochemical evaluation, including fasting blood glucose, insulin, C-peptide, and GADA measurement. LADA was defined by GADA positivity ≥1.00 U/mL.

LADA was detected in 32.2% of participants. Compared with type 2 diabetes patients, those with LADA had normal BMI ranges, lower insulin and C-peptide levels, and higher fasting glucose (P < 0.01). Multivariate analysis identified lower BMI (odds ratio [OR] 0.84; 95% CI 0.76–0.92), higher fasting glucose (OR 1.12; 95% CI 1.04–1.20), and lower C-peptide (OR 0.38; 95% CI 0.24–0.58) as independent predictors of LADA.

The findings indicate that a significant proportion of early-onset diabetes in young adults may have an autoimmune basis. Incorporating routine GADA screening can support earlier diagnosis and tailored management strategies, reducing misclassification and improving long-term outcomes.