Macrophage Count in Bronchial Lavage Fluid

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms like persistent cough, wheezing, or shortness of breath that suggest lung inflammation, infection, or other respiratory issues. It can also be used to evaluate conditions like chronic obstructive pulmonary disease (COPD), asthma, or infections such as tuberculosis or pneumonia.

What to Expect Before the Test

You may receive a bronchoalveolar lavage (BAL) procedure, where a thin tube is inserted into your airways to collect fluid from your lungs. This is typically done under sedation. You might experience mild discomfort, but it’s generally well-tolerated. Follow any specific instructions your provider gives you, such as fasting or avoiding certain medications.

What the Test Results Mean

Higher-than-normal macrophage counts may indicate inflammation, infection, or other lung conditions. Lower-than-normal counts might suggest certain lung diseases or damage. Your results will be interpreted by a healthcare professional in the context of your overall health and symptoms.

Possible Risks and Complications

The procedure carries a small risk of complications, such as bleeding, infection, or temporary shortness of breath. Rarely, more serious issues like pneumothorax (collapsed lung) can occur. Your provider will discuss risks with you before the procedure.