Written by Fred F. Ferri, MD, FACP, author of many best-selling books for primary care practice, Ferri's Best Test, 2nd Edition, equips you to quickly choose the most efficient and cost-effective diagnostic approach, including imaging or lab tests. Updates throughout, including more than 180 new tests...additional diagnostic modalities...and new algorithms...make this unique and user-friendly reference a must for determining which diagnostic tests to order. A portable, pocket-sized format allows for convenient consultation anytime, anywhere.Offers concise, well-organized guidance to the most common lab tests and diagnostic imaging modalities, all in one single resource, that makes reference remarkably fast and easy.Describes the most common imaging studies for each organ system, reviewing their indications, advantages, disadvantages, and approximate costs to simplify your decision-making process. Examines over 384 laboratory tests, describing the norma