As per the title following spirometry this is what I was informed the ratio was. This was the only info they gave me. Is that a good ratio I only ask as it's below 100 and I read lung function doesn't start to decline normally until you are 30 plus and I am 29? Said it's not indicative of COPD which was a relief and kind of curse as I do not know then why I get so out of breath on exertion. Nicotine free fully for over 2 months not quite the miracle cure I had hoped and still stuggle with cravings sometimes daily.