Description
Bronchial Lavage For AFB
Sample Type:Contact Lab
Tests Included:
Acid-fast bacilli (AFB) staining of bronchial lavage sample
Sample Required:
Bronchial lavage sample
Test Time:
Results are typically available within a few days.
Test Range Values:
The test detects the presence of acid-fast bacilli (AFB) in the bronchial lavage sample, indicating the possible presence of mycobacterial infections like tuberculosis.
What is the test?
Bronchial Lavage For AFB involves staining a bronchial lavage sample to identify acid-fast bacilli, aiding in the diagnosis of tuberculosis or other mycobacterial infections.
Test Procedure:
The bronchial lavage sample is collected and subjected to staining techniques specifically targeting acid-fast bacilli. Microscopic examination is then performed to detect the presence of these bacteria.
When to take the test:
The test is recommended when investigating suspected respiratory infections caused by mycobacteria, especially in cases of persistent cough, fever, and abnormal chest X-rays.
Who should take the test:
Patients with symptoms suggestive of tuberculosis or other mycobacterial infections, or those with a history of exposure, might require this test. It’s usually ordered by pulmonologists or infectious disease specialists.
Precautions for exceptional cases (pregnancy, etc.):
There are no specific precautions related to pregnancy for this test. Patients should inform their healthcare provider about ongoing medications and health conditions.
Frequently Asked Questions (FAQs) for Bronchial Lavage For AFB Test:
Q1: Can a negative AFB test rule out tuberculosis (TB)?
A: Not entirely. A negative test does not definitively rule out TB. Further testing and clinical evaluation are often needed for an accurate diagnosis.
Q2: What might cause a false-positive AFB test result?
A: Non-tuberculous mycobacteria or other acid-fast bacteria might sometimes cause false-positive results. Clinical correlation is necessary for accurate interpretation.
Q3: Can AFB testing be performed on other samples besides bronchial lavage?
A: Yes, AFB testing can also be done on sputum, tissue biopsies, or other body fluids to detect mycobacteria.
Q4: Is bronchial lavage a painful procedure?
A : Bronchial lavage might cause mild discomfort or irritation but is typically performed under sedation or anesthesia to minimize discomfort.
Q5: Can antibiotics affect the accuracy of the AFB test?
A: Some antibiotics might interfere with AFB staining techniques, potentially affecting the accuracy of the test. Inform your healthcare provider about ongoing medications before the test.
*Please note that specific testing protocols and guidelines may vary based on the latest recommendations from health authorities and regulatory agencies. It is essential to consult healthcare professionals and follow local testing guidelines for accurate and appropriate testing.
