Pseudohyperkalemia

<p>PSEUDOHYPERKALEMIA &mdash; Potassium is released from platelets that have aggregated. As a result, the measured <strong>serum</strong> potassium concentration may be as high as 9 mEq/Lin patients with marked thrombocytosis. Pseudohyperkalemia may on occasion be a clue to the presence of thrombocytosis, but it causes no symptoms, as <strong>plasma</strong> levels of potassium are not altered in the presence of thrombocytosis.</p>