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Updated: Jan 28, 2026

Monitoring Endoplasmic Reticulum Calcium Homeostasis Using a Gaussia Luciferase SERCaMP
Published on: September 6, 2015
Potassium homoeostasis and pathophysiology of hyperkalaemia
Keld Per Kjeldsen1,2,3, Thomas Andersen Schmidt2,4
1Department of Medicine, Copenhagen University Hospital (Holbæk Hospital), Smedelundsgade 60, DK Holbæk, Denmark.
Abstract:
Determination of potassium level is one of the most frequent laboratory tests in clinical medicine. Hyperkalaemia is defined as a potassium level >5.0 mmol/L and is one of the most clinically important electrolyte abnormalities, because it may cause dangerous cardiac arrhythmia and sudden cardiac death. Here, we review methodological challenges in the determination of potassium levels, important clinical aspects of the potassium homoeostasis as well as of the pathophysiology of hyperkalaemia.
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