Anyone else experienced higher peak flow readings with the Asma-1? My best on a mini wright was around 650 and as soon as I got my Asma-1 today I blew a 710! Seems a bit high for someone age 28, 6ft with asthma. Generally getting readings around 650 which correspond to 600 on the mini wright. Doesn't matter which meter I blow first with, the asma-1 always seems higher.
I'm guessing the electronic meters are closer to the professional spirometers so should be more accurate. It certainly seems like there is less resistance to blowing which may make a difference. I've also tried swapping mouthpieces as the inlet on the asma-1 is wider but it makes no change
Any comments would be appreciated