Clinical Chemistry and Laboratory Medicine (CCLM)
Correlated seasonal dyskalaemia in a primary care population: winter hyperkalaemia and summer hypokalaemia
Abstract Objectives In vitro serum potassium is affected by ambient temperature with peaks in the winter and troughs in the summer. We investigated whether primary care phlebotomy locations with higher winter hyperkalaemia rates exhibited higher summer hypokalaemia and evaluated a simple screening metric to identify high-risk locations. Methods Retrospective audit of Indexor-tracked primary care potassium results analysed at a UK hub laboratory between 1 July 2024 and 30 June 2025 was performed. Bivariate multileve …