| pseudohyperkalaemia | A spurious elevation of the serum concentration of potassium occurring when potassium is released in vitro from cells in a blood sample collected for a potassium measurement. This may be a consequence of disease (i.e., myeloproliferative disorders with marked leukocytosis or thrombocytosis) or as a result of improper collection technique with in vitro haemolysis. Origin: pseudo + G. Hyper, above + L. Kalium, potassium, G. Haima, blood (05 Mar 2000) |
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