- CSFA certification is administered by the NBSTSA and tested through PSI testing centers nationwide.
- The exam has 175 questions (150 scored, 25 pretest) with a 4-hour limit and a 99-question passing threshold.
- Perioperative Care makes up 55% of the exam, driven largely by Intraoperative Procedures content.
- Candidates must graduate from a CAAHEP-accredited Surgical First Assistant program before applying.
What CSFA Certification Actually Is
CSFA stands for Certified Surgical First Assistant, a credential that verifies a practitioner's ability to assist the surgeon directly during operative procedures - providing exposure, hemostasis, tissue handling, and wound closure support beyond what a surgical technologist typically performs. If you're still parsing the acronym itself, our companion pieces on CSFA Meaning, What Does CSFA Stand For?, and What Is A CSFA? break down the terminology in plain language before you dive into exam mechanics.
This article focuses specifically on the certification process itself: who runs it, what the exam looks like, what it costs, and what a candidate needs to master to pass. For a broader overview of the role and the credential's history, see CSFA Certification and What Is CSFA?.
Who Administers the CSFA Credential
The CSFA is governed by the National Board of Surgical Technology and Surgical Assisting (NBSTSA), the same body that oversees the CST credential for surgical technologists. NBSTSA sets the eligibility rules, writes the exam blueprint, and issues the certification once a candidate passes. Actual testing is delivered through PSI, a third-party testing provider that operates computer-based testing centers across the country.
Prerequisites to Sit for the Exam
Unlike some allied health credentials that allow multiple entry pathways, the CSFA has a single, strict prerequisite: you must be a graduate of a CAAHEP-accredited Surgical First Assistant program. There is no work-experience-only route and no substitution for formal accredited education. This makes the CSFA fundamentally a post-graduation credential rather than an entry-level test.
If you're evaluating whether the education-plus-exam path is worth pursuing compared to other surgical assisting routes, Is the CSFA Certification Worth It? Complete ROI Analysis 2026 walks through the tradeoffs in detail, including how the credential affects hiring and long-term career flexibility.
Exam Format, Timing, and Scoring
The CSFA exam is a computer-based, multiple-choice test delivered at PSI testing centers. Candidates answer 175 total questions within a 4-hour window. Of those, 150 questions are scored and 25 are unscored pretest items used by NBSTSA to evaluate future exam content - but since you won't know which 25 are unscored, every question deserves full attention.
To pass, you need 99 correct answers out of the 150 scored questions. According to the 2025 national data, the first-take pass rate sits at 62%, which tells you this is a meaningfully difficult licensure-style exam rather than a formality. For a deeper breakdown of what that pass rate means for your prep strategy, see CSFA Pass Rate 2026: What the Data Shows and How Hard Is the CSFA Exam? Complete Difficulty Guide 2026.
Key Takeaway
Budget your 4 hours deliberately - with 175 questions total, you have roughly 82 seconds per question on average, so don't let early items eat disproportionate time.
Testing Room Rules
PSI testing centers enforce strict conditions: no textbooks, notes, study materials, personal electronics, or personal items are allowed in the testing room. You'll be given scratch paper by the proctor, and it must be returned before you leave - nothing you write down can leave the room with you. Plan your calculation and note-taking strategy around this constraint before exam day, not during it.
The Three Content Domains
The CSFA exam blueprint is organized into three domains, and the weighting tells you exactly where to invest your study hours. A full breakdown of all three areas, with sample question themes, lives in CSFA Exam Domains 2026: Complete Guide to All 3 Content Areas.
Domain 1: Perioperative Care (55%)
This is by far the largest domain, and its weight is driven largely by Intraoperative Procedures - the core first-assisting skills like tissue retraction, hemostasis, suturing assistance, and wound closure technique.
- Intraoperative first-assisting tasks specific to different surgical specialties
- Preoperative and postoperative patient care responsibilities
- Instrument and tissue handling under direct surgeon supervision
Domain 2: Ancillary Duties (14%)
The smallest domain but still tested substantively. It covers the supporting responsibilities that surround the operative event rather than the operation itself.
- Documentation and administrative responsibilities tied to the surgical case
- Equipment and supply coordination
- Professional and legal responsibilities of the first assistant role
Domain 3: Basic Science (31%)
The second-largest domain, covering the foundational knowledge that underpins safe assisting decisions.
- Anatomy and physiology relevant to common surgical procedures
- Microbiology and infection control principles
- Pharmacology and homeostasis concepts as applied intraoperatively
Because Perioperative Care alone accounts for more than half the exam, candidates often benefit from studying it in dedicated, isolated blocks rather than blending it with the other two domains. Our dedicated guides - CSFA Domain 1: Perioperative Care (55%) - Complete Study Guide 2026, CSFA Domain 2: Ancillary Duties (14%) - Complete Study Guide 2026, and CSFA Domain 3: Basic Science (31%) - Complete Study Guide 2026 - go deeper into each area's exact subtopics.
| Domain | Exam Weight | Primary Focus |
|---|---|---|
| Perioperative Care | 55% | Intraoperative procedures, pre/postoperative care |
| Basic Science | 31% | Anatomy, microbiology, pharmacology |
| Ancillary Duties | 14% | Documentation, equipment, professional responsibilities |
Fees and Registration Mechanics
CSFA exam fees depend on your AST membership status. AST members pay $240, while all other candidates pay $350. That membership discount is substantial enough that many candidates join AST specifically before registering. Renewal costs are separate from the initial exam fee - see the section below.
A full cost breakdown, including how these fees compare across the certification lifecycle, is covered in CSFA Certification Cost 2026: Complete Pricing Breakdown.
Keeping the Credential Active
Certification isn't a one-time event. NBSTSA requires periodic renewal through one of two paths:
- Continuing education route: Submit AST-approved CE credits to AST along with a renewal application to NBSTSA, at a $45 renewal fee.
- Recertification by examination: Retake the exam, at $450 for AST members or $550 for non-members.
Most working CSFAs choose the CE route because it's dramatically cheaper and doesn't require sitting for another 4-hour exam. Still, understanding both options matters when planning your professional development budget for the next renewal cycle.
Who Hires CSFAs
Hospitals, ambulatory surgery centers, and specialty surgical practices hire CSFAs to work alongside surgeons in general surgery, orthopedics, cardiovascular, neurosurgery, and other high-volume specialties. Because the credential confirms training beyond standard surgical technologist scope, employers use it as a differentiator when filling roles that require direct tissue handling and closure assistance rather than instrument-passing alone.
If you're researching where the credential can take you professionally, CSFA Jobs covers typical employment settings and role expectations, while CSFA Salary Guide 2026: Complete Earnings Analysis looks at compensation patterns tied to specialty and setting. For details on the accredited education path that leads to eligibility, CSFA Training explains what CAAHEP-accredited programs typically involve.
A CSFA-Specific Prep Approach
Generic study advice - flashcards, timed practice, spaced review - only helps if it's mapped onto the CSFA's actual weighting. Given that Perioperative Care is 55% of the exam and Basic Science is another 31%, together these two domains account for the overwhelming majority of scored questions. A reasonable allocation devotes the most calendar time to Perioperative Care, a solid secondary block to Basic Science, and a lighter, focused pass on Ancillary Duties near the end.
Perioperative Care Deep Dive
- Work through intraoperative procedure scenarios by specialty
- Review pre- and postoperative care checklists and patient positioning
Basic Science Review
- Refresh anatomy and physiology tied to common procedures
- Study microbiology, infection control, and pharmacology fundamentals
Ancillary Duties and Integration
- Cover documentation and equipment coordination topics
- Run full-length timed practice sets mixing all three domains
Because the real exam gives you 4 hours for 175 questions with no reference materials allowed in the room, timed practice under similar conditions matters more than passive review. A structured question bank on our practice test platform lets you simulate that pacing before test day. For a complete week-by-week study plan built around these domain weights, see CSFA Study Guide 2026: How to Pass on Your First Attempt.
Running scored practice sets on csfaexam.com before your PSI appointment gives you a realistic read on where your 150-scored-question performance actually stands relative to the 99-correct passing line - far more useful than guessing based on how confident you feel after reading a textbook chapter.
Frequently Asked Questions
No. A CSFA has completed additional CAAHEP-accredited first-assistant education and is certified by NBSTSA to perform direct patient-contact tasks like tissue handling and closure, beyond the instrument-passing scope typical of surgical technologists.
The exam includes 175 total questions - 150 scored and 25 unscored pretest items - administered within a 4-hour time limit at PSI testing centers.
You need 99 correct answers out of the 150 scored questions. The 25 pretest questions do not count toward your score.
No. PSI testing centers prohibit textbooks, notes, study materials, personal electronics, and personal items in the testing room. Scratch paper is provided but must be returned to the proctor afterward.
You can renew by submitting AST-approved continuing education credits to AST along with a renewal application to NBSTSA for a $45 fee, or by recertifying through examination for $450 (AST members) or $550 (non-members).