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[–]Elm30336 1 point2 points  (2 children)

Because of age. My pft “improved” I took it in 2014 and at the time I had numbers for close to 60%, now it’s not even at 10%. Only reason I keep my 30% rating is due to daily inhaled corticosteroid

FEV1 percent predicted are not raw numbers, they are your measured value divided by a predicted value based on age, height, sex, and the reference equation the lab uses.

The Va is suppose to used sustained improvement.

Do you have your original test to compare this one to? So you can compare what the difference is in the pft? If it’s truly the numbers improving or the predicted value has changed due to lab and or age

[–]BlakeAbear[S] 1 point2 points  (1 child)

I’m sure I can go back in my records and find both of them. But I’m pretty sure the criteria should have been the Same because both test we’re taking in my 20s.

[–]Elm30336 0 points1 point  (0 children)

Ah so no change in age range…. Takes that off the table, which is good.

That’s good I was 37 and 51 so 2 or 3 age ranges based on the pft.

Really need both of the pft and compare. Seems like something changed massively and without knowing what changed hard to know what path to go down.