What is the correct term to describe a platelet count of 550 ´ 109/L when all other complete blood count (CBC) results are basically normal?
a. Normal
b. Thrombocytosis
c. Thrombocytopenia
d. Essential thrombocythemia
ANS: B
This platelet count is elevated, so the correct terminology to describe it is thrombocytosis; this is most probably a reactive thrombocytosis. Platelets are also elevated in essential thrombocythemia, but they usually exceed 1 million/mL (1000 ´ 109/L), and other abnormalities would also be seen in the CBC.
Health Professions
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