👉 Pubmed Fluid, also known as Peritoneal Fluid, is a biological fluid collected from the peritoneal cavity, typically obtained through a peritoneal lavage procedure. It is rich in proteins, glucose, and other cellular components reflecting the physiological or pathological state of the underlying tissues. The fluid is used in clinical diagnostics to assess conditions such as infections, inflammatory diseases, and malignancies. Its composition varies depending on the underlying pathology, making it a valuable tool for diagnosing and monitoring diseases, particularly in oncology and infectious diseases.