MedlinePlus Medical Encyclopedia: Sputum test

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Sputum test

A sputum sample is obtained by coughing deeply and expelling the material that comes from the lungs into a sterile cup. The sample is taken to a labarotory and placed in a medium under conditions that allow the organisms to grow. A positive culture may identify disease-producing organisms that may help diagnose bronchitis, tuberculosis, a lung abscess, or pneumonia.

Update Date: 12/8/2001

Updated by: A.D.A.M. Medical Illustration Team

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