Hello @hishamhussain. While I see that you tagged spicegirl and Colleen Young, here are the techniques used by Mayo Clinic to diagnose Pulmonary Fibrosis, http://mayocl.in/2jiwXcU.

Have you had issues with an inaccurate diagnosis regarding PF in the past?

@JustinMcClanahan
Thanks Justin for your caring
Yes I have symptoms of excess mucus without coughing up for 4 months
and still I could not fin the accurate diagnosis
I use montelucast and anti histamine medicines but it did not give me any better
currently I use serrapeptase enzyme and i feel it help me temporally
so my question id what are the types of medical examinations can help in giving accurate diagnose for the PF?

Hisham, click this link http://mayocl.in/2jiwXcU to see tests and examinations done to accurately diagnose PF.