title: Pseudohyperkalaemia in thrombocythaemia.
abstract: Pseudohyperkalaemia in thrombocythaemia, in its primary form or associated with polycythaemia vera, can occur with platelet counts in excess of 600 X 10(9)/l, and it is not related to high leukocyte or thrombocyte counts. An increment of 0.15 mmol/l serum potassium was found for every 100 X 10(9)/l rise in platelet count with a correlation coefficient of 0.82. Potassium from platelets is not released during the aggregation phase but during the degranulation phase of the coagulation process.
authors.affiliation: Department of Clinical Chemistry, University Hospital Dijkzigt (Erasmus University Rotterdam).
authors.forename: R W
authors.initials: RW
authors.lastname: Wulkan
authors.forename: J J
authors.initials: JJ
authors.lastname: Michiels
mesh_terms: D004573:Electrolytes / Q000097:blood; D004906:Erythrocyte Count; D006801:Humans; D006947:Hyperkalemia / Q000097:blood / Q000209:etiology*; D007958:Leukocyte Count; D010976:Platelet Count; D011087:Polycythemia Vera / Q000097:blood / Q000150:complications; D011188:Potassium / Q000097:blood; D013920:Thrombocythemia, Essential / Q000097:blood* / Q000150:complications
chemical_list: D004573:Electrolytes; D011188:Potassium