AFB Detection of DNA test is performed on a sample of Tissue to measure the level of AFB DNA. It is conducted to assure Tuberculosis and also on going phase of the treatment and after the treatment of Tuberculosis. This test that is conducted is also known as Acid Fast Bacilli Detection of DNA Real time PCR Tissue And Biopsy. RT-PCR assay demonstrated a high degree of sensitivity for pulmonary TB and good sensitivity for extra-pulmonary TB. It shows a high degree of specificity for occurring in TB infection for the sampling regimes. AFB Detection of DNA Real Time PCR Tissue And Biopsy is done using Real time PCR method on a Tissue sample in a normal laboratory set up.
If your results on an AFB smear or culture were negative, you probably don't have active TB. But it could also mean there weren't enough bacteria in the sample for your health care provider to make a diagnosis.
If your AFB smear was positive, it means you probably have TB or other infection, but an AFB culture is needed confirm the diagnosis. Culture results can take several weeks, so your provider may decide to treat your infection in the meantime.
If your AFB culture was positive, it means you have active TB or another type of AFB infection. The culture can identify which type of infection you have. Once you have been diagnosed, your provider may order a "susceptibility test" on your sample. A susceptibility test is used to help determine which antibiotic will provide the most effective treatment.
If you have questions about your results, talk to your health care provider.