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There are many causes of abnormal liver tests (transaminitis) in patient with HIV infection or AIDS. The most common are infections, particularly viral and mycobacterial. Other common causes are the medications that are used to treat the HIV and its complications. Often a definite cause for the abnormal tests cannot be found. If there is great concern about the liver, a biopsy of the liver can be done although such biopsies infrequently discover a disease or complication that is not already known or at least suspected.
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