Through surgery or a procedure such as ERCP (endoscopic retrograde cholangiopancreatography), a specimen of bile is obtained for examination in the laboratory. It is placed in culture media and observed for growth of microorganisms that are then identified. The specimen may be obtained during or after gallbladder surgery from a tube to drain bile. A specimen may possibly be obtained during a radiology procedure to evaluate the gallbladder or biliary (liver secretion) system.
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