Diagnosing active tuberculosis (TB) in people and then testing whether their infection is sensitive to drugs can take weeksâ€”a delay that greatly hinders effective treatment, especially in TB/HIV co-infected patients. Being associated with poverty, an ideal TB test should be affordable to the lowest income group in the most undeveloped nation. I am involved with the development of a rapid, sensitive and inexpensive TB detection/drug susceptibility test for use in poor resource settings. We have developed É¸Â²GFP10 and TBlue assays to analyze Mycobacterium tuberculosis cells directly from sputum samples using reporter mycobacteriophages. We are at a junction of taking this test from bench to field testing. In addition, these phages are been used to determine response to treatment in TB patients.