Most countries with active organ transplant programmes have a system of registries to track the donation and allocation system. The latest to join this club is China, which launched an online registry this March. With the registry launch anyone above 16 can log on to the website and become a volunteer.China launched its organ donation system in 2010 after a trial run. The country's National Health and Family Planning Commission mandates that donated organs be assigned to patients by a computerized system. Organs go to those with the most medical need, regardless of social status or wealth. About 300,000 Chinese need organ transplants each year, but roughly 10,000 get one because of shortages. The ratio in the US is one in four.While individual states in India have taken steps to set up such registries, there is none at the national level though the amended organ transplant law seeks such a network of registries.In the US, the National Organ Transplant Act came into force in 1984 and an Organ Procurement and Transplantation Network (OPTN) was created. It's run by a private non-profit United Network for Organ Sharing (UNOS).Government provides a regulatory framework. Nearly 300,000 people are registered as donors — over 167,000 deceased donors and more than 130,000 living. All organs put together, the US has a waiting list of over 134,000. The UNOS organ-sharing system maximizes efficient use of deceased organs combining medical utility with justice. Key factors include: attaining the longest patient survival time; striving to improve a patient's quality of life; and a cost-benefit ratio.The 'justice' component includes factors such as: priority to patients whose needs are most urgent; to those who've spent the longest time on the waiting list and local access to organs. Selection of recipients from the waiting list uses a point system, which varies by organ.The European Union has a European Registry linking national and regional databases to allow seamless sharing of national data. The EU registry has a legal framework on donor selection, waiting list and organ allocation which tries to harmonize different donation laws in EU countries.The European Framework for Evaluation of Organ Transplants was constituted to promote a common definition of terms and methodologies to evaluate transplantation results and promote a registry or network of registries.In the UK, the National Health Service Blood and Transplant was set up in 2005 to ensure efficient supply of blood, organs and associated services to the National Health Service. The UK too has a comprehensive policy for selection and allocation of organs. In 2013-14, UK had 1,320 deceased donors who made over 3,500 transplants possible. There were over 1,100 living donors.Globally, several registries are set up simultaneously to track the organ transplantation systems to ensure ethical and safety norms as recommended by WHO.