This procedure involves using a thin needle to withdraw fluid from the abdomen. The fluid is tested for difference factors, including protein levels, bacteria cultures, and white blood cell counts. Low levels of protein in the fluid and a low white blood cell count suggest that cirrhosis is the cause of the ascites. The appearance of the fluid is helpful in determining a cause. For example, a cloudy fluid plus a high white blood cell count mean an infection is present.
Bloody fluid suggests the presence of a tumor.
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