Sedimentation rate: Esr is a non-specific indicator suggesting the presence of inflammation. Factors increasing ESR are increased levels of gamma-globulin and fibrinogen. The latter is made by the liver and released in response to fragments of that material that are released when it breaks down in the bloodstream. It is not always due to infection, but if infection is being followed it can be a valuable indicator.
Answered 9/15/2016
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