Step 2 CK

General information

Step 2 CK is a written theoretical knowledge exam that takes 9 hours on a computer during one day. It consists of 8 one-hour blocks of questions and has altogether 346 multiple-choice questions. The average time per questions is 1 minute and 23 seconds. Most questions are case presentations. Other general information is the same as for the Step 1 exam.

Test questions:

Text books:

  • First Aid for the USMLE Step 2 CK
  • Blueprints – in Medicine, Surgery, Pediatrics, Ob/Gyn, and Psychiatry
  • Underground Clinical Vignettes: Step 2 bundle

These are good and concise books. The First Aid for the USMLE Step 2 CK is essential. The Blueprints are traditionally designed text books. The Underground Clinical Vignettes have clinical cases; one case per page with the chief complaint on the top, the clinical presentation, physical exam, labs, imaging, and diagnosis on the bottom.

Note: If you find older books you can see old designation simply as “Step 2” (old name for Step 2 CK) and "CSA" (old name for Step 2 CS).