What is this test?
This laboratory test is performed on a bronchoalveolar fluid sample to detect the presence of Mycobacterium tuberculosis (Acid fast bacilli) on the culture and guide antimicrobial therapy.
Why is this test performed?
This test is performed to detect tuberculosis infection caused by mycobacterium tuberculosis. It has the following symptoms:
- Chronic cough
- Chest pain
- Fatigue
- Fever and chills
- Weakness.
- How to prepare for this test?
Your doctor might request you to avoid food and drinks for a certain time before the test. Inform your doctor about your complete medical history especially about medicines, bleeding disorders, and allergies.
- What are the risks of this test?
- Sore throat
- Bleeding in airway
- Infection
- Irritation
- Airway perforation
- Lung collapse
- How will this test feel?
Since your mouth and throat will be under the influence of a numbing medicine, you won’t feel any pain during the procedure. However, you might feel pressure or irritation from the bronchoscopy. After the procedure, you may have sore throat and cough for a few days.
- What are the risk factors of tuberculosis?
- Close contact with an active TB patient
- Immune suppressing diseases like AIDS
- TB endemic areas
- IV drug abusers.
- How is tuberculosis treated?
Tuberculosis is treated by monotherapy or combination of the following medicines:
- Isoniazid
- Rifampicin
- Ethambutol
- Pyrazinamide
Positive or negative
- Interpretation of test results:
Positive: Pathogenic organism (Mycobacterium tuberculosis) detected and identified on culture. The bacteria is further tested for sensitivity and the appropriate antibiotic is mentioned in the reports.
Negative: No growth on culture is seen. Mycobacterium tuberculosis is absent.