Monday, April 28, 2014

Q: At what level of WBC, Platelet and Hematocrit count,  pseudohyperkalemia is expected

Answer: Pseudohyperkalemia is usually a laboratory artifact rather than a real biological abnormality.

Beside common causes of pseudohyperkalemia like hemolysis, excessive tourniquet time or a delay in the processing of the blood specimen, it can also occur in specimens from patients with abnormally high numbers of

  • platelets (>500,000/mm³),
  • leukocytes (> 70 000/mm³), or
  • erythrocytes (hematocrit > 55%)

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