Yes, my first sputum test done almost a year after my bronchoscopy was negative. My original pulmonologist didn’t check my sputum when I finally started producing. She just wanted me to start the antibiotics and I refused. When I got an appointment with NJH they sent me a sputum kit so I could send in a sample well before my appointment. That is the sputum that test negative. NJH agreed that I didn’t need to start antibiotics. Doesn’t mean it’s totally gone but it’s not a high enough load to show up at this time.