pseudohyperkalemia

pseu·do·hy·per·kal·e·mi·a

(sū'dō-hī'pĕr-kal-ē'mē-ă), 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 (that is, myeloproliferative disorders with marked leukocytosis or thrombocytosis) or as a result of improper collection technique with in vitro hemolysis. [pseudo + G. hyper, above + L. kalium, potassium, G. haima, blood]

pseudohyperkalemia

Lab medicine An in vitro phenomenon seen in megakaryocytic hyperplasia, thrombocytosis, leukocytosis, or myeloproliferative disease, where rapid clotting of blood releases potassium from RBCs Lab ↑ Serum K+, plasma K+ is normal. Cf Hyperkalemia.

pseu·do·hy·per·ka·le·mi·a

(sū'dō-hī'pĕr-kă-lē'mē-ă) 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. May be a consequence of disease (i.e., myeloproliferative disorders with marked leukocytosis or thrombocytosis) or result from an improper collection technique with in vitro hemolysis.
Synonym(s): pseudohyperkalaemia. [pseudo + G. hyper, above + L. kalium, potassium, G. haima, blood]