Changes in hematological and micronutrient parameters and their relationship with glycemic control in pediatric patients with type 1 diabetes

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Aim: Disturbances in hematological indices and micronutrient status are frequently encountered during the routine follow-up of children with type 1 diabetes mellitus (T1DM). In clinical practice, these alterations often parallel poor glycemic control. Therefore, this study was designed to evaluate hematological parameters and micronutrient levels in pediatric patients with T1DM and to investigate their relationship with metabolic control. Materials and Methods: This retrospective analysis included 159 children and adolescents with T1DM followed at the Pediatric Endocrinology Clinic of Düzce University Faculty of Medicine, alongside 160 age- and sex-matched healthy controls. Laboratory data were obtained from medical records and included complete blood count parameters, lipid profile, ferritin, vitamin B₁₂, and vitamin D levels. Glycemic control was classified as “good” for HbA1c