Studies on the platelets from three patients with essential thrombocytosis were presented. The intraplatelet free amino acid levels were elevated and the pseudo-hyperkalemic phenomenon was present. In one subject the pseudohyperkalemic phenomenon was reversed after a therapeutic remission, but the elevation of amino acids persisted. The data suggest that a qualitative abnormality may exist in the platelets of patients with essential thrombocytosis.

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© 1966 by American Society of Hematology, Inc.
1966
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