In the United States, a patient’s priority to receive a donor lung is determined by a numerical value known as Lung Allocation Score (LAS), which ranges from 0 to 100. The LAS system has been in place since 2005 and is utilized by the United Network for Organ Sharing (UNOS). This scoring system plays a crucial role in assessing the urgency and suitability of lung transplantation for individuals in need. By assigning a numerical value based on various factors, the LAS system helps prioritize the allocation of donor lungs, ensuring that the most suitable candidates receive the necessary transplantation in a timely manner.