The best questions from eight PreTest clerkship books! Clinical Vignettes for the USMLE Step 2 CK is a compilation of the best questions from eight McGraw-Hill PreTest clinical review books and provides you with the perfect vehicle for assessing your knowledge before taking the USMLE Step 2 CK exam. The book is a comprised of 368 clinical vignettes divided into eight blocks of 46 questions and provides one complete board exam to simulate the exam-day experience. This is the comprehensive practice exam to take before you take the test.