- Subject must have a chest x-ray that is consistent with the diagnosis of COPD (e.g., not diagnostic of pneumonia, other infection, atelectasis, or pneumothorax or other active/ongoing pulmonary conditions) and taken less than or equal to 3 months prior to study start. If there is no chest x-ray taken less than or equal to 3 months prior to study start, or if recent results are unavailable for review, a chest x-ray will be performed.