Analysis of Volatile Organic Compounds in the Breath of Lung Transplant Rejection Patients Using Infrared Spectroscopy

Inclusion Criteria: * Age 18 and older * Patient is able to give informed consent * Lung transplant patient who had both lungs transplanted * Patient is at least 90 days after their lung transplant * Patient is able to provide a breath sample Exclusion Criteria: * Patient is less than 18 years old * Patient received multiple organ transplants * Patient had an organ transplant prior to their lung transplant * Patients who received a single lung transplant * Patient less than 90 days or more than 1 year from their lung transplant * If patient has smoked 4 hours or less before breath sample or consumed alcohol (including mouthwash) 8 hours or less before breath sample