Specializing in Canine and Feline Neurology and Neurosurgery for over 35 years

blood urea nitrogen test (BUN or AZO)

A common test in a chemistry panel that measures the amount of nitrogen in the blood that comes from the waste product urea.  It can be used to see how well the kidneys and liver are working and if dehydration is present.

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Related Words
blood  ;  chemistry panel  ;  kidney  ;  liver