As inventory control is a significant supervision tool to avoid interruption in the provision of healthcare services and to ensure quality, efficiency and effectiveness in the provided healthcare services, adoption of the principles of inventory control management and use of inventory control methods at hospitals have become a present-day requirement. The purpose of this study is to identify the consumption costs and consumption amounts of medical consumables inventories, by analyzing the medical consumables inventories for 2020 and 2021 of the operating room department of a private hospital in Ankara province, to compare them by years and to determine the most appropriate method applicable at a hospital in respect of ensuring effectiveness in inventory control. Analysis of data regarding the medical consumables available at the inventories of the operating room department was performed with the help of Microsoft Excel program and by applying ABC, VED and ABC-VED Matrix methods from the inventory control methods. Application of the ABC method establishes the significance of medical consumables inventories in terms of costs, application of the VED method establishes the significance of medical consumables inventories in terms of criticality and application of the ABC-VED Matrix method establishes the significance of medical consumables inventories in terms of both costs and criticality. As a result of the study, it has been determined that all three methods can be used in the development process of an inventory control plan. However, it has been concluded that the ABC-VED Matrix method presenting a combination of cost and criticality parameters is a more appropriate method with regard to ensuring effectiveness in inventory control, which represents an important element of inventory management at hospitals.