The CST exam, plainly.
The CST is the dominant credential in the U.S. operating room. Hospitals require or strongly prefer it. The exam is dense, instrument-heavy, and longer than most entry-level allied health certs.
If your school doesn't already point you at one specific certification, the CST is recognized across most U.S. employers in surgical technology.
The exam is administered by NBSTSA · National Board of Surgical Technology and Surgical Assisting. Full blueprint and registration are on the official site.
Cost, format, and scoring
The exam is computer-based and taken at a proctored testing center or via remote proctoring. You have 4 hr for 175 questions.
- Multiple choice, four options each.
- You may flag and revisit questions; no penalty for guessing.
- Pass/fail results are typically returned immediately on screen.
What's on it
The content domains and their approximate weights:
A 6-week study plan
The plan below assumes 30–45 focused minutes per weekday plus longer weekend sessions for practice tests. Adjust on your own schedule, but don't compress past 4 weeks unless you already work in surgical technology.
Anatomy by surgical specialty
GI, GU, ortho, neuro, cardiothoracic.
Microbiology & sterilization
Asepsis, sterile field, decontamination cycles.
Instruments by specialty
Hardest section. Use spaced repetition daily.
Procedures and patient positioning
Common cases, drapes, skin prep, time-outs.
Pharmacology, hemostasis, electrosurgery
Medications on the field; ESU safety.
Mock exams + instrument flashcards
Two full-length exams; instrument drills daily.
ScrubPrep covers CST instruments and procedures with adaptive practice.
After you pass
Most surgical technology employers want to see your card on day one. Your CE cycle starts on issue, not on hire. We cover renewal logistics in the Surgical Technology career guide.
Find programs with on-site testing.
The fastest route to a card: a school that runs the exam in-house on the last day of the program.