AFB C/S (Aspiration Fluid for (Mycobacterium Tuberculosis)

Specimen Required

Aspiration Fluid

Fasting Required

Purpose of the Test

The AFB C/S test is typically ordered if a healthcare provider suspects that a patient may have tuberculosis. Symptoms of tuberculosis include a persistent cough, fever, night sweats, and weight loss. If the patient has aspiration fluid in the lungs, the AFB C/S test may be ordered to see if the fluid contains the tuberculosis bacterium.

When this test is required

The AFB C/S test is requested when a healthcare provider suspects that a patient may have tuberculosis. Symptoms of tuberculosis include a persistent cough, fever, night sweats, and weight loss. The test may also be ordered if a patient has been in close contact with someone who has tuberculosis or if they have recently traveled to a country with high rates of tuberculosis.

What the Test Detects

AFB C/S refers to a laboratory test that is used to detect the presence of Mycobacterium tuberculosis (MTB) in a patient’s aspiration fluid. This is done by culturing the fluid sample and then testing for the presence of MTB bacteria in the culture.

Preparation for the Test

No specific test preparation is needed for the AFB C/S test. However, patients should inform their healthcare provider of any medications they are taking, as some medications may interfere with the test results. It is also important to inform the healthcare provider of any allergies or medical conditions before the procedure.

Sample Requirements

The AFB C/S test requires a sample of the patient’s aspiration fluid, which is collected by inserting a needle through the chest wall and into the lungs. This procedure is known as a thoracentesis.

Additional Notes

It’s important to note that the AFB C/S test may take several weeks to yield results, as the MTB bacteria grow very slowly in culture. Additionally, the test may produce a false negative result if the patient has a very small amount of MTB bacteria in their aspiration fluid or if the bacteria are not effectively cultured in the laboratory. In some cases, additional tests may be needed to confirm a diagnosis of tuberculosis. If you have concerns about tuberculosis or the AFB C/S test, it’s best to speak with your healthcare provider for further information.

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