I was just diagnosed with CF 2 years ago and I am now 33. I cultured pseudo and staph back in Oct 03, got sick and was aggressively treated with cipro & TOBI. I had a bronch done early Dec. and my cultures came back clear, but he only took a sample from my upper left lobe, because it was the most edematous. In early Feb I cultured stenotrophomonas maltophilia and staph, (but no pseudo) and soon after became sick again and was put on Levaquin (one of the few that the steno was sensitive to) It has taken me awhile to bounce back, but I am starting to feel better now. I wanted to find out though if when you are in-between infections, and feeling okay, yet you're coughing up colored mucus, (i.e. anywhere from dark yellow to greenish) does that mean there are still bacteria in there? I guess I just am not sure if colored sputum is the "norm".Also, have any of you who have cultured steno had any problems with it?? There is just not a whole lot of info about steno and its clinical significance. Thanks in advance,Jen