MCQ Hematology Answer 27
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Explanation:
An RBC mass study is the next most appropriate test to order to determine whether the elevated hematocrit is a true polycythemia (erythrocytosis) or a spurious elevation (resulting from reduced plasma volume).
Because of the significant smoking history, this patient may have evidence of chronic obstructive pulmonary disease with resultant abnormal arterial blood gases and pulmonary function tests, but these tests will not distinguish a true polycythemia from a spurious one.
An EPO level may be indicated later in the work-up once a true polycythemia has been documented.
Tags: MCQ, Hematology, Polycythemia
Category: Hematology MCQs
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