A 55 year old man has been discharged from hospital following a stroke. It is noted that he has possible signs of Polycythaemia on his hospital blood tests. Which one of the following results would most support this diagnosis?
A 55 year old man has been discharged from hospital following a stroke. It is noted that he has possible signs of Polycythaemia on his hospital blood tests. Which one of the following results would most support this diagnosis?
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