Introducing our NHA Phlebotomy Exam Study Guide 2022-2023: Test Prep Book with 400+ Practice Questions for the National Healthcareer Association Certified Phlebotomy Technician Examination [2nd Edition]! Ascencia Test Prep's NHA Phlebotomy Exam Study Guide 2022-2023 includes everything you need to pass the NHA Certified Phlebotomy Technician Examination the first time.