Description
Why It’s Done:
The test is commonly done to:
• Evaluate possible infections such as meningitis (in CSF) or pleuritis (in pleural fluid).
• Diagnose inflammatory or autoimmune conditions, such as rheumatoid arthritis or lupus.
• Differentiate between transudate and exudate fluid, which helps determine the cause of fluid accumulation (e.g., heart failure vs. infection or cancer).
• Monitor chronic conditions that affect fluid balance or cause recurring effusions.
Preparation:
• No special preparation is typically required for the test itself.
• Depending on the type of fluid being collected, the procedure may involve a lumbar puncture, thoracentesis, paracentesis, or joint aspiration.
• You may be advised to:
o Avoid eating or drinking for a few hours before certain procedures.
o Inform your doctor of any medications, especially blood thinners.
o Arrange for someone to accompany you, especially if sedation or anesthesia is used during fluid collection.
