Preface The medical laboratory plays a pivotal role in the healthcare system, significantly contributing to the diagnosis of diseases and the formulation of appropriate treatment plans. In Canada, professional ethics are an integral part of medical laboratory operations, ensuring the delivery of high-quality healthcare services that respect patients’ rights and maintain the confidentiality of their information. This book aims to highlight the importance of applying ethical practices in the operations of medical laboratories in hospitals. The principles of professional ethics, including integrity, transparency, responsibility, and respect, serve as essential guidelines for laboratory staff, helping to ensure that patient samples and health information are handled with the utmost precision and security. Through this work, readers will gain insights into how adherence to these ethical standards can lead to more accurate diagnostic results, enhance patient trust, and protect the rights and privacy of patients. This book is published in English and Arabic to make it accessible to Arabic-speaking readers, thereby extending its benefits to a broader audience. By understanding and implementing these ethical principles, healthcare professionals can improve the quality of services provided and reinforce the trust between patients and the healthcare system. Gamal E.O. Elhag Idris