Routine examination of pleural and abdominal fluid includes the color, clarity, and number of cells contained in the pleural or abdominal fluid, as well as exfoliative cytology. 1. Color: If the color of the fluid is blood, it may be malignant; if it is yellowish, it indicates that there may be inflammation in the organism. 2. Transparency: If the test result shows that the fluid is clear, it proves that it is leaking fluid; if the fluid shows turbidity that is visible to the naked eye, it indicates that it is exudate fluid related to inflammation. 3. Cell count: If the cell count within the fluid increases, especially the neutrophils are substantially elevated, it means that the fluid is infectious. 4. Exfoliative cytology: This test is necessary to further determine the nature of the pleural and abdominal fluid. For example, malignant cells may be found in the pleural and abdominal fluid in the case of liver cancer and lung cancer. If you suspect that you have hydrothorax (fluid that stays in the chest cavity) or ascites, you need to go to the hospital in time to get a clear diagnosis and treatment plan, and use medicines under the guidance of the doctor to avoid self-medication.