Tracheobronchial Lavage Fluid Culture (with Sensitivity) for Microbial Identification

What This Test Measures

The test involves washing your airway with a sterile fluid to collect samples of cells, mucus, and any microbes present. Lab technicians then grow these samples in controlled environments to identify bacteria, fungi, or other pathogens. Some tests may also include antibiotic sensitivity testing to determine which medications could effectively treat the infection.

Why It’s Done

Your healthcare provider may recommend this test if you have symptoms like persistent cough, fever, or difficulty breathing that suggest a lung or airway infection, especially if other tests (like blood cultures or chest X-rays) are inconclusive.

Sample Collection Process

The procedure is typically done in a hospital or clinic setting. A healthcare professional will insert a tube through your nose or mouth into your trachea, then gently flush sterile fluid through your airway to collect samples. You may feel slight discomfort or coughing, but it’s usually brief. The collected fluid is then sent to a lab for analysis.

What to Expect After Testing

Results can take several days to a week, depending on the growth and identification process. You’ll be notified once the results are ready, and your provider will discuss them with you. Follow-up care may include starting antibiotics or other treatments based on the findings.