Inclusion Criteria:  Men or women over 15 years of age Suffering from a lung condition requiring a transplant planned at Foch Hospital or being followed up at Foch Hospital following a lung transplant Have signed the informed consent form and for patients aged 15 to 18 years that the person(s) exercising parental authority has/have signed the informed consent. Be affiliated with a Health Insurance plan.  Exclusion Criteria:  Pregnant, parturient and/or lactating woman Hemoglobin level less than or equal to 8g/dl Persons of full age who are subject to a legal protection measure or who are unable to express their consent Persons under the protection of justice Not being able to follow the study requirements for geographical, social or psychological reasons Patient refusal.