How to Pass the CST Exam in 2026
The Certified Surgical Technologist (CST) exam, administered by the National Board of Surgical Technology and Surgical Assisting (NBSTSA), is the gold-standard certification for surgical technologists in the United States. With a 75% first-time pass rate, roughly one in four test-takers fails on their first attempt — and the ones who fail typically share the same preparation gaps, including underestimating a domain most study guides barely mention: Equipment Sterilization and Maintenance.
This guide breaks down exactly what's on the 2026 exam — straight from NBSTSA's official 2024 Examination Content Outline — where candidates struggle, and how to build a study plan that covers your weak spots before test day.
Start Your FREE CST Exam Prep Today
Our comprehensive study course covers all three CST exam domains with practice questions and detailed explanations — 100% FREE, no credit card required.
CST Exam Format & Structure (2026)
| Detail | Specification |
|---|---|
| Administering body | NBSTSA (National Board of Surgical Technology and Surgical Assisting) |
| Total questions | 175 multiple-choice |
| Scored questions | 150 (25 are unscored pretest items, mixed in randomly) |
| Passing score | 98 out of 150 scored questions (65.3%) |
| Time limit | 4 hours |
| Testing format | Computer-based, through PSI — at a test center or via Live Remote Proctoring from home |
| Exam fee | $230 for AST members / $340 for non-members |
| Retake limit | Up to 3 attempts per calendar year, no mandatory waiting period |
| Retake fee | Full member/non-member fee each attempt |
The 25 unscored pretest items are mixed randomly throughout the exam — you can't identify which questions don't count, so treat every question as if it's scored. NBSTSA also notes that passing scores are set by a panel of psychometricians and subject-matter experts and are reviewed periodically, so always confirm the current cut score at nbstsa.org before test day.
The Three CST Exam Domains (What You're Actually Tested On)
These weights come directly from NBSTSA's 2024 CST Examination Content Outline (effective since January 2023) — many third-party guides still cite an older, incorrect breakdown that omits an entire sub-area.
Domain 1: Perioperative Care — 97 of 150 Items (~65%)
This is the make-or-break domain. It covers everything from the moment you scrub in to the final count at case closing, across three sub-areas:
A. Preoperative Preparation (19 items, ~13%)
- Reviewing the surgeon's preference card and verifying equipment/instrument availability
- Preparing the OR environment and coordinating positioning/safety devices
- Surgical hand scrub, gowning, and gloving (initial and waterless techniques)
- Draping the Mayo stand, back table, and patient; securing cords and light handles
- Participating in the Universal Protocol (surgical time-out)
B. Intraoperative Procedures (68 items, ~45% — the single largest sub-area in the exam)
- Maintaining aseptic technique and following Standard/Universal Precautions
- Anticipating the steps of the procedure and passing instruments and supplies
- Performing counts with the circulator at appropriate intervals
- Identifying instruments by function, application, and classification
- Preparing hemostatic agents and verifying/mixing/labeling medications and solutions
- Assembling, testing, and operating specialty equipment (microscopes, endoscopic, robotic, power equipment)
- Preparing, passing, and cutting suture material; assisting with stapling devices
- Verifying, preparing, and labeling specimens; preparing drains, catheters, and tubing
- Recognizing and responding to intraoperative emergencies
C. Postoperative Procedures (10 items, ~7%)
- Removing drapes and equipment; assisting with postoperative patient cleaning
- Reporting abnormal findings, medication/solution amounts used, and blood loss
- Disposing of sharps and contaminated waste per Standard Precautions
- Room turnover: cleaning, restocking, and resetting the OR for the next case
Domain 2: Ancillary Duties — 23 of 150 Items (~15%)
This domain is where most study guides fall short — it includes an entire sub-area (Equipment Sterilization and Maintenance) that many candidates have never seen broken out separately.
A. Administrative and Personnel (7 items, ~5%)
- Creating, maintaining, and revising surgeons' preference cards
- Following hospital and national disaster-plan protocols
- Recognizing safety/environmental hazards (fire, chemical spill, laser, smoke) and electrical safety basics
- Ethical and legal practices, interpersonal skills, and cultural diversity in patient care
- Serving as preceptor/mentor to new or traveling perioperative staff
B. Equipment Sterilization and Maintenance (16 items, ~11% — bigger than the entire Administrative/Personnel sub-area)
- Troubleshooting equipment malfunctions
- Decontaminating and pre-cleaning instruments with enzymatic cleaner
- Inspecting, testing, and assembling instruments and equipment
- Interpreting chemical and biological indicators
- Transporting and restocking instruments and equipment through Central Supply/SPD
Domain 3: Basic Science — 30 of 150 Items (20%)
A. Anatomy and Physiology (18 items, 12%)
- Anatomical and physiological systems as they relate to the surgical procedure (cardiovascular, GI, GU, musculoskeletal, neurological, and more)
- Medical terminology and abbreviations
- Surgical pathologies: abnormal anatomy, disease processes, malignancies, traumatic injuries
B. Microbiology (6 items, 4%)
- Classification and pathogenesis of microorganisms; infection control procedures
- Principles of tissue handling (Halsted principles) and wound healing factors
- Surgical wound classification and factors influencing infection
C. Surgical Pharmacology (6 items, 4%)
- Anesthesia-related agents, complications (e.g., malignant hyperthermia), and administration methods (general, local, block, MAC)
- Types, uses, and interactions of drugs and solutions (hemostatic agents, antibiotics, IV solutions)
- Weights, measures, conversions, and maximum dosage awareness (lidocaine, bupivacaine, heparin, epinephrine)
Why 25% of Candidates Fail: The 5 Most Common Mistakes
1. Under-studying Intraoperative Procedures
With 68 scored items, this sub-area alone is nearly half your score. Candidates who spread their time evenly across all areas miss this critical weight.
2. Ignoring Equipment Sterilization and Maintenance
At 16 items, this overlooked sub-area outweighs all of Administrative and Personnel combined — yet many programs treat decontamination and instrument processing as an afterthought. Know enzymatic pre-cleaning, chemical/biological indicators, and Central Supply workflows cold.
3. Weak Instrument Identification
You must know surgical instruments by name, function, and the procedures where they're used. This includes retractors (Richardson, Army-Navy, Balfour, Bookwalter), clamps (Kelly, Kocher, Allis, Babcock), and specialty instruments by surgical specialty.
4. Ignoring Surgical Counts
Count procedures appear repeatedly on the exam. You need to know when counts happen (before incision, before closing the peritoneum, before closing skin, and during a relief), who participates, and what happens when counts are incorrect (mandatory X-ray, no closing until resolved).
5. Time Management
4 hours for 175 questions gives you about 1.4 minutes per question (240 minutes ÷ 175). Candidates who spend too long on difficult questions run out of time on easier questions they would have gotten right.
Practice CST Questions for FREE
Our practice bank covers all three CST domains — including Equipment Sterilization and Maintenance — with scenario-based questions that match the actual exam format.
8-Week CST Study Schedule
This schedule assumes you've graduated from an accredited surgical technology program:
| Week | Focus Area | Daily Study | Key Activities |
|---|---|---|---|
| Week 1 | Preoperative Preparation + Anatomy Review | 60–90 min | Patient positioning, surgical preps, draping sequences, anatomy flashcards |
| Week 2 | Intraoperative Procedures — Sterile Technique | 60–90 min | Aseptic principles, gowning/gloving, sterile field management, contamination scenarios |
| Week 3 | Intraoperative Procedures — Instruments & Counts | 60–90 min | Instrument identification (flashcards), count procedures, specimen handling |
| Week 4 | Intraoperative Procedures — Surgical Specialties | 60–90 min | General surgery, orthopedic, OB/GYN, neuro, cardiothoracic — key instruments per specialty |
| Week 5 | Postoperative Procedures + Administrative/Personnel | 60–90 min | Room turnover, preference cards, safety hazards, ethics, HIPAA |
| Week 6 | Equipment Sterilization & Maintenance + Microbiology | 60–90 min | Decontamination, enzymatic cleaning, chemical/biological indicators, wound classification |
| Week 7 | Surgical Pharmacology + Weak-Area Review | 60–90 min | Anesthetics, hemostatics, dosage limits, gap-fill on whichever sub-area scored lowest |
| Week 8 | Full Practice Exams & Final Review | 90–120 min | Timed practice tests (175 questions in 4 hours), review wrong answers, fill remaining gaps |
Total study time: 70–110 hours over 8 weeks
Study Priority by Domain Weight
| Sub-Area | Scored Items | Weight | Recommended Study Time |
|---|---|---|---|
| Intraoperative Procedures | 68 | ~45% | ~40% of study time |
| Preoperative Preparation | 19 | ~13% | ~12% |
| Anatomy & Physiology | 18 | 12% | ~12% |
| Equipment Sterilization & Maintenance | 16 | ~11% | ~12% |
| Postoperative Procedures | 10 | ~7% | ~7% |
| Administrative/Personnel | 7 | ~5% | ~5% |
| Microbiology | 6 | 4% | ~6% |
| Surgical Pharmacology | 6 | 4% | ~6% |
Instrument Memorization Strategy: The "See It, Name It, Use It" Method
Surgical instrument identification (an explicit Intraoperative Procedures task) is one of the most-tested areas and where many candidates lose points. Here's a proven 3-step approach:
Step 1: See It
Study instruments using images, not just text descriptions. Know what each instrument looks like — tip shape, jaw pattern, handle style.
Step 2: Name It
Create flashcards with the instrument image on one side and the name + category on the other. Categories include:
- Cutting & dissecting (scalpels, Metzenbaum scissors, Mayo scissors)
- Clamping & occluding (hemostats, Kelly clamps, Kocher clamps, bulldog clamps)
- Grasping & holding (Allis, Babcock, tenaculum, DeBakey forceps)
- Retracting (Richardson, Army-Navy, Balfour, Deaver, Weitlaner)
- Suturing & stapling (needle holders, skin staplers)
- Specialty (rongeurs, curettes, osteotomes, periosteal elevators)
Step 3: Use It
For each instrument, know at least 2 procedures where it's commonly used and when in the procedure it's needed (opening, exposure, closure).
Exam Day: What to Expect
Choosing How You Test
When you schedule through PSI, you choose between testing in person at a PSI test center or Live Remote Proctoring (LRP) — a webcam-monitored option that lets you test from home or another secure location after a system check. Both options carry the same content, time limit, and passing score.
Before You Arrive (or Log In)
- Confirm your appointment through PSI (schedule.psiexams.com)
- Bring/show two forms of valid ID: one primary photo ID (driver's license, state ID, passport, or military ID) and one secondary ID with your signature (Social Security card, student ID, or employee ID) — both must match your Authorization to Test letter
- Arrive (or log in) early; for remote testing, complete the equipment/bandwidth check beforehand
- No personal items allowed in the testing room or visible on camera — only keys and a wallet for in-person testing
During the Exam
- You'll complete a short, untimed practice computer session before the clock starts
- Questions appear one at a time — all multiple-choice
- You can mark questions and return to them later — but not after taking a break (breaks are allowed, but you can't revisit answered questions afterward, and break time isn't added back)
- Pace yourself: aim for roughly 90 questions by the 2-hour mark
- Use any remaining time to review flagged questions before submitting
After the Exam
- Post-graduate candidates testing more than 45 days after graduation (with self-submitted transcripts) typically get a preliminary pass/fail result immediately at the test center
- Current students testing through their school usually receive an emailed score report within about 48 business hours of PSI transmitting results, once your school confirms graduation requirements
- If you fail, you can retake after paying the full exam fee again ($230 members / $340 non-members), with no mandatory waiting period (max 3 attempts per calendar year)
CST Eligibility Requirements
You must meet one of these pathways:
| Pathway | Requirements |
|---|---|
| Accredited Program Graduate | Graduate from a CAAHEP- or ABHES-accredited surgical technology program |
| Military Training | Graduate from a military surgical technology training program |
Important: NBSTSA eliminated the "alternate pathway" (work experience only) in 2021. You must now have formal education from an accredited program to be eligible — work experience alone no longer qualifies.
Is Joining AST Worth It Before You Test?
AST (Association of Surgical Technologists) membership costs $80/year — a fee that hasn't changed in over two decades — and unlocks the $230 member exam rate instead of $340. That's a $30 net savings on your first exam alone (the $110 fee discount minus the $80 dues), plus continuing-education resources and job-board access. If you expect to recertify or retake, the math gets even better.
Surgical Technologist Career Outlook (2026)
| Metric | Data |
|---|---|
| Median salary | $62,830/year (~$30.21/hour), BLS May 2024 data |
| Job growth (2024–2034) | 5% (faster than average) |
| Annual job openings | ~8,700 |
| Top-paying states (mean wage) | Alaska, District of Columbia, California, Nevada |
| Work setting | Hospitals (71%), outpatient care centers (11%), physicians' offices (10%), dentists' offices (2%) |
Note: BLS now reports this occupation as "Surgical Assistants and Technologists" (SOC 29-2055). CST certification typically increases pay by $5,000–$10,000 compared to non-certified surgical technologists, and many employers now require or strongly prefer CST certification for hiring.
Start Your CST Prep Now — 100% FREE
Our comprehensive CST study course includes:
- All 3 exam domains — including Equipment Sterilization and Maintenance — with detailed explanations and surgical illustrations
- Practice questions covering instrumentation, sterile technique, and pharmacology
- AI-powered study help — get instant explanations for any surgical concept (10 free AI questions/day)
- Free forever — no credit card, no trial period
About 8,700 surgical tech jobs open annually. Your CST certification starts here.
Official CST Resources
- NBSTSA Official Site — Registration, eligibility, exam prep materials
- NBSTSA CST Exam Prep — Practice exams and study evaluation
- NBSTSA CST FAQs — Fees, retake policy, and passing-score methodology
- NBSTSA Live Remote Proctoring — Remote testing setup and requirements
- AST (Association of Surgical Technologists) — Professional organization, membership, and CE resources
- CAAHEP Program Search — Find accredited surgical technology programs
- Bureau of Labor Statistics — Surgical Assistants and Technologists — Career outlook data
Buy on Amazon
Practice exams on ExamEdge
Study guide on Mometrix