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How is vasculitis diagnosed?
Laboratory testing of blood or body fluids in a patient
with active vasculitis generally indicates inflammation in the body. Depending on the degree of organ involvement, a variety of organ function tests can be abnormal.
The diagnosis of vasculitis is definitively established
after a biopsy of involved tissue demonstrates the pattern of blood vessel inflammation. Examples of tissues used for biopsy include skin, sinuses, lung, nerve, and kidney. Depending upon the situation, an alternative to biopsy can be an
X-ray test of the blood vessels
called an angiogram, which can demonstrate characteristic patterns of inflammation in affected blood vessels.