Tuesday, February 10, 2015


Q: Which lab test best describe to suspect pseudohyperkalemia

A) platelets (>500,000/mm³), leukocytes (> 50 000/mm³), or erythrocytes (hematocrit > 55%)

B) platelets (>300,000/mm³), leukocytes (> 70 000/mm³), or erythrocytes (hematocrit > 55%)

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

D) platelets (>500,000/mm³), leukocytes (> 70 000/mm³), or erythrocytes (hematocrit > 48%)

E) platelets (>300,000/mm³), leukocytes (> 40 000/mm³), or erythrocytes (hematocrit > 45%)


 
Answer:   C
Some of the common reasons of Pseudohyperkalemia are

  • hemolysis during venipuncture
  • a delay in the processing of the specimen. 
  • Thrombocytosis (>500,000/mm³)
  • Leukocytosis (> 70 000/mm³)
  • Erythrocytosis (hematocrit > 55%)

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