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About this exam

The Certified Surgical Technologist (CST®) credential is issued by the National Board of Surgical Technology and Surgical Assisting (NBSTSA), which describes itself as the premier standard in certification for the surgical technology field. The credential is built for practicing surgical technologists who want to demonstrate a level of training, professional competency, and commitment above that of a non-certified technologist. NBSTSA also issues the Certified Surgical First Assistant (CSFA®) credential, the advanced step for technologists who assist the surgeon directly with tasks such as controlling bleeding and closing incisions. The CST exam samples the full perioperative role: preparing instruments and supplies, establishing and protecting the sterile field, anticipating the surgeon's needs during the procedure, managing counts and specimens, handling post-procedure care, and applying professional and administrative knowledge such as documentation, standards, and patient-safety practices. Preparation typically combines didactic coursework from an accredited surgical technology program, hands-on clinical repetition, and review of the content outline NBSTSA publishes for the exam. The CST credential is recognized by organizations including the Association of Surgical Technologists, the American College of Surgeons, and the Council on Surgical & Perioperative Safety, and NBSTSA has held NCCA accreditation for 30 years. This page is an independent study guide and is not affiliated with or endorsed by NBSTSA.

What you'll study

Common questions

About CST preparation

What topics does the CST exam actually cover?

Questions are grouped around the whole perioperative cycle rather than single procedures: preoperative preparation (instruments, supplies, sterile setup, patient prep), intraoperative care (sterile technique, anticipation, counts, specimens), postoperative care (dressings, drains, transport, turnover), and administrative and professional knowledge such as documentation, standards, and patient safety.

How many questions are on the exam and how long do I get?

Item count and testing time are set by NBSTSA and are published in its current candidate handbook and its 'On Test Day' page. Because these details are revised periodically, verify the number directly on those official pages rather than relying on a prep course, forum, or older printed guide.

How difficult is the exam?

Most candidates find it moderate but broad. It rewards recall of instrumentation and sterile technique but also tests judgment: what you do when a count is off, when a field is compromised, or when a specimen is mislabeled. Candidates who only drill instrument names without practicing scenario reasoning often score unevenly across sections.

What is the most common reason candidates fail?

Weak applied knowledge, not weak memorization. Typical failure patterns are knowing what an instrument is but not when the surgeon needs it, missing steps in counts and specimen handling, and skipping the professional/administrative content because it feels less clinical. Two other recurring problems are poor time management and not reading the full question before answering.

Can I retake the exam if I do not pass?

NBSTSA controls retake eligibility, waiting periods, and any additional fees, and states those rules on its CST application process and FAQs pages. Read those pages before you test so you know what a failed attempt costs you in time, since the waiting period affects how you should plan your study schedule.

What does the exam cost, and how long is the certification valid?

The application fee and the certification period are published on NBSTSA's application and renewals pages and are not fixed from year to year. Check those official pages for the current figures, and note the recertification requirements at the same time so you can plan continuing education from the start.

Should I take the CST exam before or after CSFA?

CST first. The CSFA credential is the advanced step for first assistants, and its content builds on surgical technology fundamentals. In practice you sit for CST when you finish your surgical technology program, then pursue CSFA later once you have first-assistant experience and a clear reason to advance.

What is a sensible study order?

Start with the official content outline so your effort matches the weighting of each section. Then work foundational material first: asepsis and sterile technique, instrumentation, anatomy and physiology, and pharmacology. Add procedure-specific review after that, and finish with timed full-length practice sets to fix pacing and to surface weak content areas.

Is the CST credential recognized by employers and states?

Yes. NBSTSA markets the CST and CSFA credentials as nationally recognized and state-mandated, and the CST credential is endorsed by organizations including the Association of Surgical Technologists, the American College of Surgeons, and the Council on Surgical & Perioperative Safety. Employers can verify certification status through NBSTSA's credential verification service.

I have been out of the operating room for a while. Will I still pass?

It is harder, but it is a preparation problem, not a disqualification. Budget extra time for anatomy, instrumentation, and sterile technique, and rebuild clinical language by reviewing cases you used to scrub. Confirm your eligibility status with NBSTSA before studying, because eligibility rules depend on your training and work history.