It is important to note that a negative test result does not necessarily mean that there is no fungal infection present. This is because the presence of fungi may not always be detected in a sample, particularly in cases where the fungal elements are low in concentration or the sample was not collected properly. In some cases, a follow-up test may be needed to confirm the diagnosis. It is also important to follow the healthcare provider’s instructions regarding treatment, even if the test results are negative. The bronchial washing procedure is generally safe, but there is a risk of complications, such as bleeding or infection. The healthcare provider should be informed if the patient has any allergies, bleeding disorders, or lung conditions, as these may increase the risk of complications.