Description
Why It’s Done:
This test is performed to:
• Diagnose or rule out infections such as bacterial, viral, or fungal infections in the concerned body cavity
• Detect inflammatory conditions, including autoimmune diseases or malignancies
• Differentiate between types of fluid accumulation, such as transudate vs. exudate in pleural effusions or ascites
• Guide further testing and treatment based on the white blood cell count and their types (neutrophils, lymphocytes, eosinophils, etc.)
Preparation:
• Sample Collection: The fluid sample is usually collected by a healthcare professional through procedures like:
o Thoracentesis (for pleural fluid)
o Paracentesis (for peritoneal/ascitic fluid)
o Arthrocentesis (for synovial/joint fluid)
o Lumbar puncture (for cerebrospinal fluid)
• Fasting: Not typically required unless combined with other tests
• Clothing/Comfort: You may be asked to wear a hospital gown; the area of collection will be cleaned and possibly numbed before the procedure
• Consent: You may need to sign a consent form, as fluid aspiration is a minor invasive procedure
• Medication Disclosure: Inform your doctor about any blood-thinning medications you are taking
