The College of American Pathologists (CAP) Checklist 2019 is an essential tool for healthcare organizations and laboratories. It plays a pivotal role in ensuring the quality and accuracy of laboratory testing and diagnostic services. The CAP Checklist 2019 encompasses a comprehensive set of standards and guidelines that laboratories must adhere to, aiming to improve patient care and maintain the highest levels of laboratory proficiency. Here is a numbered listicle of some key items covered in the CAP Checklist 2019: