This system is called the GOLD staging or grading system. Your grade will affect what treatment you get. COPD leads to decreased lung capacity over time. The system looks at many things.

COPD is a group of progressive lung diseases that ... of the GOLD classification. The GOLD classification is used to determine COPD severity and help form a treatment plan. This is based on ...

Approval of Nucala marks the first biologic approved for chronic obstructive pulmonary disease patients with blood eosinophil ...