Hepatic Fluid for AFB Smear/ZN Stain

Specimen Required

FLUID (All Body Fluid)

Fasting Required

Purpose of the Test

The Hepatic Fluid for AFB Smear/ZN Stain test is done to check for the presence of acid-fast bacilli (AFB) in the liver fluid. AFB are a type of bacteria that can cause tuberculosis and other infections.

When this test is required

The test is typically ordered when a person shows symptoms of tuberculosis or an AFB infection such as fever, weight loss, night sweats, fatigue, and abdominal pain. It may also be ordered for individuals who are at risk of developing tuberculosis, such as people with weakened immune systems or those who have been exposed to someone with active tuberculosis.

What the Test Detects

The Hepatic Fluid for AFB Smear/ZN Stain test is used to detect the presence of acid-fast bacilli (AFB) in the liver fluid. This test is performed using a special staining technique called Ziehl-Neelsen (ZN) stain that helps in identifying the AFB bacteria under a microscope.

Preparation for the Test

There is no specific preparation needed for this test. However, it is important to inform your healthcare provider of any medications or supplements you are taking, as these may interfere with the test results. It is also important to let your healthcare provider know if you have any bleeding disorders or allergies to certain medications or materials.

Sample Requirements

To perform the test, a sample of liver fluid is collected from the patient using a needle. The sample is then processed and stained using a special dye called Ziehl-Neelsen (ZN) stain, which makes the AFB bacteria visible under a microscope.

Additional Notes

It is important to note that a negative test result does not completely rule out the possibility of a tuberculosis or AFB infection. Additional tests, such as culture or molecular testing, may be required to confirm the diagnosis. Additionally, it is important to inform your healthcare provider if you have had any recent liver procedures or surgeries, as these can affect the accuracy of the test results. You should also let your healthcare provider know if you have any bleeding disorders or allergies to certain medications or materials, as these may affect the collection of the sample.

Selected Tests