Phlebotomy Essentials, Fourth Edition Workbook is designed to be used in combination with Phlebotomy Essentials, Fourth Edition and is a valuable learning resource that helps you better understand the principles of phlebotomy by reinforcing key concepts covered in the textbook. To ensure that you get the most out of your studies, this companion Workbook offers a variety of exercises and tools that make it easy for you to understand and remember essential information and build your critical-thinking skills.