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PA-COS practice questions - frequently asked questions

Plain answers about how PA-COS Exam Prep works: the exam, the questions, pricing, the free trial, and what you actually get.

No - and you should be wary of any site claiming otherwise. Every question here is original, written to mirror the style, difficulty, and judgment the real PA-COS exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The PA-COS exam spans 9 domains: Benign and Malignant Bone Tumors (5% of the exam); Fractures/Dislocations (25% of the exam); Infectious Diseases and Connective Tissue Disorders (5% of the exam); Joint Disorders (20% of the exam); Pediatric (4% of the exam); Preoperative, Postoperative, and Complication Management (7% of the exam); Soft-Tissue Injuries and Disorders (25% of the exam); Spine (7% of the exam); Professional, Legal, and Ethical Issues (2% of the exam). Every practice question on this site is tagged to one of these domains.

The domains are not weighted equally on the exam. By share of the marks: Fractures/Dislocations 25%; Soft-Tissue Injuries and Disorders 25%; Joint Disorders 20%; Preoperative, Postoperative, and Complication Management 7%; Spine 7%; Benign and Malignant Bone Tumors 5%; Infectious Diseases and Connective Tissue Disorders 5%; Pediatric 4%; Professional, Legal, and Ethical Issues 2%.

The PA-COS exam has 120 questions and is completed in 2 hours. Our timed practice mirrors that length and pacing, so exam day feels familiar.

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