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 joint 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.