A fluid sample obtained after paracentesis undergoes detailed laboratory examination to diagnose the disease and determine its cause. These analyses aim to identify the origin, content, and potential pathological conditions of the fluid, especially infections or malignancies. The main tests performed include:

* Cell Count and Differential Count: The number of white blood cells (leukocytes) and other cells in the fluid is determined to evaluate inflammation or other cellular abnormalities.
* Biochemical Analyses: Protein and albumin levels are measured to gain information about conditions such as liver diseases or peritonitis. Glucose and lactate dehydrogenase (LDH) levels may suggest the presence of infection or malignancy. Amylase levels indicate pancreatic pathologies like pancreatitis.
* Microbiological Examination: The fluid is examined directly under a microscope and culture tests are performed to detect infectious agents (bacteria, fungi, etc.).
* Cytological Examination: Cytological analysis of the fluid is carried out to investigate the presence of cancer cells.