How much fluid is typically removed during a diagnostic thoracentesis procedure in the workup for pleural effusion (fluid on the lungs)?

Updated: Dec 28, 2018
  • Author: Kamran Boka, MD, MS; Chief Editor: Guy W Soo Hoo, MD, MPH  more...
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Answer

While there is no consensus amount for a diagnostic thoracentesis, a minimum of 20 mL would be enough for basic analysis and culture. Most of these procedures remove less than 100 mL of fluid.


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