Laboratory diagnostics of chronic kidney disease in Serbia: Current practice and priorities for harmonisation.

BACKGROUND: To assess current laboratory practices in chronic kidney disease (CKD) diagnostics in Serbia and identify areas requiring harmonisation in line with national and international guidelines. METHODS: A cross-sectional, questionnaire-based survey was conducted between June and August 2025, with support from the Serbian Society of Medical Biochemists, which distributed invitations to its members working in medical laboratories across Serbia. Eighty-three laboratories participated (response rate 84.7%), representing primary, secondary, tertiary, and private healthcare sectors. Data were analysed descriptively.