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What is During the course of evaluation of a case of polycythemia following investigation may be required to establish the cause EXCEPT - and explain in detail?
<p>In secondary polycythemia,erythropoietin levels are raised. Bone marrow examination shows erythroid hyperplasia . Aerial blood gas analysis to look for oxygen saturation .</p><p>Reference :Harsh mohan textbook of pathologysixth edition pg no 359.</p>