Usually Not-: We're pretty good at picking up details such as higher than expected red cell counts due to things such as dehydration or other causes that could raise counts to be artificially high. We look at parameters such as urine specific gravity, orthostatic pressures, reactive markers that can be triggered in dehydration and anemia as well as something called the RDW which elevates during anemic periods.
Answered 3/9/2015
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