Fluid Routine Examination in Dehradun

What is a Fluid Routine Examination?

When fluid accumulates abnormally in the chest, abdomen, a joint or around the heart, analysing it is usually the fastest route to understanding why. The examination has three parts. Appearance alone is informative: clear straw-coloured fluid, cloudy pus, blood-stained fluid and milky fluid each point in different directions. The cell count and differential separate the possibilities further, with neutrophil predominance suggesting bacterial infection, lymphocyte predominance raising tuberculosis or malignancy, and red cells raising trauma or malignancy. The chemistry, principally protein, albumin, glucose and LDH, distinguishes the two fundamental categories: a transudate, which is fluid pushed out by pressure or low protein as in heart failure, cirrhosis or kidney disease, and an exudate, where the lining itself is inflamed or invaded as in infection, tuberculosis or cancer. That transudate-exudate distinction is the single most useful output of the test, because it splits the differential diagnosis in half and determines everything that follows. Cytology for malignant cells, culture and tuberculosis testing are typically sent from the same tap.

Why take this test?

Fluid analysis is advised whenever an abnormal collection has been found and its cause is not already established: breathlessness with a pleural effusion on chest X-ray, abdominal distension with ascites, a swollen painful joint, or fluid around the heart. Its purpose is to answer why, since the same appearance can be produced by heart failure, cirrhosis, kidney disease, infection, tuberculosis or cancer, and those require entirely different treatment. In India tuberculosis is a leading cause of a lymphocyte-rich exudative effusion, so ADA and molecular testing are usually requested alongside. The fluid is obtained by a doctor through a tap performed in a clinical setting, which also frequently relieves symptoms at the same time. Send everything from one tap where possible: routine analysis, cytology, culture and tuberculosis testing, since repeating the procedure to add a test is an avoidable burden on the patient.

• Breathlessness with a pleural effusion on chest X-ray
• Abdominal distension with ascites
• A swollen, painful joint requiring diagnosis
• Fluid around the heart on imaging
• Distinguishing a transudate from an exudate
• Alongside cytology, culture and tuberculosis testing from the same tap

FAQs: Fluid Routine Examination in Dehradun