I'm at Jewish National Hospital in Denver, at age 80, dx of mild asthma and obstructive airway disease, the sputum test was negative. Copiously amounts of mucus, fatigue, sob, chronic cough. Repeat sputum as 1st one negative. Mycrobacterium lentiflavin was present a yr ago. No meds prescibed, yet. Will see a pulmonologist while here.