Ann Clin Biochem 2012 Jan 31;49(Pt 1):97-100. Epub 2011 Oct 31.
Department of Clinical Chemistry, Medisch Spectrum Twente Hospital Group, PO Box 50000, Enschede 7500 KA, The Netherlands.
Life-threatening situations of hyperkalaemia are often caused by renal failure, hyperglycaemia or medication. However pseudohyperkalaemia, a falsely elevated potassium concentration, is usually caused by haemolysis, repeated clenching of the fist during venepuncture or abnormal cell numbers. Another rare cause of pseudohyperkalaemia is familial pseudohyperkalaemia, an autosomal dominantly inherited trait, with increased leakage of potassium from erythrocytes. Read More