Have been on prednisone x 2 months. down to 12.5 mg/day & just had pulmonary function testing.no one told me to stop.could that have effected results?

Prednisone: Yes, Prednisone could have affected your results.

Pred. effects PF.: Prednisolone does not favourably affect lung function and bronchodilator responsiveness in stable copd. While it is true that some patients of COPD may have a substantial improvement with a short course of oral prednisolone, evidence does not favour this as a strategy to identify patients who may have a better outcome with treatment. Such an approach should be individualized and the effects of tre.

Reduces inflamm: The prednisone reduces inflammation which can improve airflow as detected on pulmonary function testing.