Start Here · 3 min read
Exam Overview
The CST examination is the national certification exam for entry-level surgical technologists. It is developed and administered by the NBSTSA, and passing it earns the Certified Surgical Technologist credential, which many employers and several states require for practice.
Exam Format
| Feature | Details |
|---|---|
| Total questions | 175 multiple-choice questions |
| Scored questions | 150 |
| Pretest (unscored) questions | 25, placed randomly and not identified |
| Answer format | Single best answer, four options |
| Time limit | 4 hours; breaks are allowed, but the clock keeps running |
| Passing standard | 98 correct answers out of the 150 scored questions |
| Delivery | Computer-based, at PSI testing centers or on campus for eligible program students |
Content Outline
The 150 scored questions follow a content outline based on a national job analysis of surgical technology practice. Perioperative Care carries nearly two-thirds of the exam.
| Domain | Subdomain | Scored questions |
|---|---|---|
| Perioperative Care | Preoperative Preparation | 19 |
| Intraoperative Procedures | 68 | |
| Postoperative Procedures | 10 | |
| Ancillary Duties | Administrative and Personnel | 7 |
| Equipment Sterilization and Maintenance | 16 | |
| Basic Science | Anatomy and Physiology | 18 |
| Microbiology | 6 | |
| Surgical Pharmacology | 6 | |
| Total | 150 |
Scoring
- Only the 150 scored questions count toward the result.
- The passing standard is a raw score of 98 correct answers.
- Results are reported as pass or fail; candidates who do not pass receive a breakdown of performance by content area.
- There is no penalty for a wrong answer, so answer every question.
Eligibility
Candidates qualify through graduation from a surgical technology program that was accredited by CAAHEP or ABHES at the time of enrollment, or through completion of a qualifying military surgical technology training program. Proof of graduation is a program director letter, graduation certificate, or transcript; military candidates submit a DD214, graduation certificate, or transcript.
Fees and Retakes
| Applicant | Fee |
|---|---|
| AST member | $230 |
| Non-member | $340 |
- Fees include a non-refundable application processing fee.
- A candidate who does not pass may reapply immediately, with a new application and full fee for each attempt.
- A maximum of three attempts is allowed per calendar year.
Test Day
- Bring the identification listed in your authorization notice; names must match exactly.
- Arrive early to allow time for check-in and security screening.
- Personal items, notes, and electronic devices are not allowed in the testing room.
- Use the on-screen mark feature to flag questions and return to them before time expires.
Finished reading?
Next, start the first chapter.