Free CST Practice Tests (2026)
Start with the free diagnostic to see where you stand, then practice in tutor or timed mode. Full-length simulations match the real CST.
Diagnostics
CST Practice Test 1
10 questions · 14 min10 free CST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testPractice tests
CST Practice Test 2
10 questions · 14 min10 free CST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testCST Practice Test 3
5 questions · 10 min5 free CST practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testHow these CST practice tests match the real exam
The real Certified Surgical Technologist (CST) Exam has 175 questions and a 240-minute time limit. Question types: Multiple choice (one best answer); 150 scored plus 25 unscored pretest items. Each practice test here uses the same question formats, so you get used to how CST questions are asked before test day.
The tests draw on every CST content area, weighted like the official outline:
- Perioperative Care (about 64.7% of the exam)
- Ancillary Duties (about 15.3% of the exam)
- Basic Science (about 20% of the exam)
Use tutor mode to see the explanation after each answer, or timed mode to practise at real exam pace. Every answer comes with an explanation of why it is right and why the other options are wrong.