Clumped platelets will cause which of the following spurious results when cell counts are performed on an automated hematology analyzer?
a. Platelets low and white count high
b. Platelets high and white count low
c. Platelets low and white count unaffected
d. Platelets low and hemoglobin high
ANS: A
The presence of clumped platelets in blood will cause the platelet count to be low and the white count to be high when performed using an automated analyzer. The clumps of platelets may be of a similar size to white blood cells (WBCs) and the instrument cannot distinguish them as nonwhite cells.
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