Explore quality assurance practices in coagulation laboratories through this comprehensive lecture. Delve into theoretical and practical applications of developing effective QA schemes, focusing on identifying and mitigating common sources of error. Learn about quality management systems, technical requirements, and the importance of reliability in medical laboratory settings. Examine key aspects such as periodic reviews, test request management, turnaround times, quality control measures, and external quality assurance. Gain insights into future changes, error handling, measurement uncertainty, and statistical process control. Understand the continuous nature of quality assurance and its critical role in maintaining high standards in coagulation testing.