"GI Motility Testing: A Laboratory and Office Handbook" by Henry Parkman, Satish S. C. Rao, and Richard McCollum is a comprehensive textbook on gastroenterology that focuses on the subject area of medical testing. Published in 2010 by Slack, Incorporated, this trade paperback book contains 504 pages and is written in English. The authors provide detailed information on GI motility testing in both laboratory and office settings, making it a valuable resource for healthcare professionals and students interested in this specialized field. With a 10-inch length and 7-inch width, this handbook is a must-have for those in the medical industry seeking to expand their knowledge in gastroenterology.