AFB C/S (Bronchial Washingss for Mycobacterium Tuberculosis)

Specimen Required

BRONCHIAL WASHING

Fasting Required

Purpose of the Test

The AFB C/S (Acid-Fast Bacillus Culture and Sensitivity) test is performed to identify and diagnose tuberculosis (TB) caused by Mycobacterium tuberculosis. The test helps in detecting the presence of TB bacteria in the bronchial washings collected from the lungs and determining the sensitivity of the bacteria to antibiotics.

When this test is required

The test is usually requested when an individual has symptoms of TB or has been exposed to someone with TB. It may also be requested when an individual has a weakened immune system or has a history of TB.

What the Test Detects

The test involves examining the bronchial washings under a microscope to identify the presence of acid-fast bacilli, which are characteristic of TB bacteria. The sample is then cultured on special media to allow the bacteria to grow. Once the bacteria have grown, they are tested against different antibiotics to determine which antibiotic(s) will be effective in treating the infection.

Preparation for the Test

Before the test, the individual may be asked to fast for a few hours. They may also be asked to stop taking certain medications that may interfere with the test results.

Sample Requirements

The sample required for this test is bronchial washings obtained through bronchoscopy, a procedure that involves passing a flexible tube with a camera through the mouth or nose into the lungs to collect the sample.

Additional Notes

Bronchoscopy, the procedure used to collect the sample for the test, may have some risks and complications, such as bleeding, infection, or a collapsed lung. It is important to discuss any concerns or questions with your healthcare provider before the procedure.

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