We had always been told that it was the test to have and that it would tell the whole story. For years my daughters doc recommended having this procedure done (her throat cultures were always negative) until she turned 17 and the pseudo showed up and after doing several inhaled and oral med combinations it continued to show up- so IV meds were suggested along with a bronc. We decided to go ahead and have it done and the bronc result was negative. We thought YIPPEE! However we were informed that it was possibly a false negative. What a let down after years of being told that this was the test to tell all and now we go through with it and we are being told this. Confused! We would be very interested and would appreciate hearing about what others have been told by their docs concerning the issue about conculsiveness of bronc results.