The Chemistry Department at the College of Education for Pure Sciences organized a training course on quality control in clinical biochemistry laboratories. The course was presented by Asst. Prof. Ziad Tariq Habib, Asst. Lect. Furqan Muhammad Hussein, and Asst. Lect. Maha Mahdi Obaid. This course aimed to introduce participants to the concept of quality control and its importance in clinical biochemistry laboratories to ensure the accuracy and reliability of laboratory results. It also explained the types of internal and external quality control and how to apply each in the laboratory. The course also included several topics, including a detailed explanation of the definition of quality control, its importance in clinical biochemistry laboratories, and the difference between internal and external quality control. It also highlighted the role of quality control in ensuring the accuracy of results and improving the quality of healthcare, and drew attention to analytical errors that can be detected through quality control. The researchers recommended training participants on interpreting quality control results using statistical charts such as the Levey-Jennings chart and Westgard’s rules, and enhancing laboratory personnel’s skills in detecting and dealing with analytical errors to avoid their impact on medical diagnosis.