Best CSFA Practice Questions 2026: What to Expect on the Exam

CSFA Exam Format: What the 175 Questions Actually Look Like

Before you touch a single practice question, it helps to understand exactly what the NBSTSA has built. The Certified Surgical First Assistant exam is a computer-based, multiple-choice test administered through PSI testing centers. Candidates answer 175 questions in a 4-hour window, but here's the detail many first-time test-takers miss: only 150 of those questions are scored. The remaining 25 are unscored pretest items the NBSTSA is quietly evaluating for future exam versions.

You won't know which questions are scored and which are pretest, so every item deserves your full attention. To pass, you need 99 correct answers out of the 150 scored questions. That threshold, combined with the four-hour ceiling, means pacing matters almost as much as content knowledge. If you want a deeper walkthrough of how difficult this pacing structure actually is in practice, the complete CSFA difficulty guide breaks down time-per-question math in more detail.

Domain Breakdown and Question Distribution

The CSFA exam is organized into three content domains, and understanding their relative weight is the single most useful thing you can do before writing (or reviewing) a single practice question. Practice sets that don't mirror this weighting will give you a false sense of readiness.

Perioperative Care isn't just the largest domain - it's larger than the other two combined. Within it, Intraoperative Procedures carries the heaviest emphasis, which is why practice questions on tissue handling, hemostasis, exposure, and instrument-passing sequences show up so frequently on real exams. For a full breakdown of every subtopic inside this domain, see the Domain 1: Perioperative Care study guide, and for a topic-by-topic map of all three domains together, the CSFA Exam Domains complete guide is worth reading before you start drilling questions.

Question Styles You Will See on Test Day

CSFA questions are standard four-option multiple choice, but the framing varies in three common patterns. Recognizing these patterns before test day helps you avoid overthinking straightforward items and slowing your pace unnecessarily.

• Scenario-based questions: A short clinical vignette describes a step in a procedure and asks what the surgical first assistant should do next.
• Definition/recall questions: Direct questions about anatomy, instrumentation, or terminology with no clinical scenario attached.
• "Best answer" questions: Multiple options may be technically correct, but one is more appropriate given the specific context described - these are the most time-consuming and require careful reading.

Scenario-based questions dominate the Perioperative Care domain, while Basic Science leans more heavily on recall. Ancillary Duties often blends both styles, testing whether you understand the reasoning behind administrative and support tasks, not just the steps themselves.

Sample-Style Questions: Perioperative Care

Because this domain represents 55% of the exam, your practice sessions should reflect that proportion. Below are the types of stems you should expect - not verbatim exam content, but representative of the reasoning style tested.

• During a laparoscopic procedure, the surgeon requests additional exposure of the operative field. Which action by the surgical first assistant is most appropriate?
• A patient's intraoperative bleeding increases during dissection near a major vessel. What is the first-line technique the assistant should apply?
• Postoperatively, a wound shows signs of tension along the closure line. Which dressing or closure adjustment addresses this most directly?

Notice that none of these questions ask you to simply define a term - they ask you to apply knowledge in a live clinical moment, which is exactly how Domain 1 is tested. For question banks and topic checklists organized specifically around this domain, the Perioperative Care study guide is the most efficient starting point.

Sample-Style Questions: Basic Science

Basic Science accounts for 31% of the scored exam and tests foundational knowledge that supports every decision made in Perioperative Care. Expect questions on anatomy and physiology, microbiology, pharmacology, and wound healing physiology.

• Which structure is most at risk of injury during dissection in a specific anatomical region described in the stem?
• A patient is on a specific anticoagulant. What intraoperative consideration does this raise for the surgical first assistant?
• Which phase of wound healing is characterized by collagen remodeling and increased tensile strength?

These questions reward candidates who understand mechanisms, not just memorized facts. If Basic Science is a weaker area for you, the Domain 3: Basic Science guide organizes the subtopics so you can target gaps rather than re-reading an entire textbook.

Sample-Style Questions: Ancillary Duties

At 14% of the exam, Ancillary Duties is the smallest domain, but skipping it in your practice rotation is a common - and costly - mistake, since it still represents roughly 21 scored questions.

• Which documentation step is the responsibility of the surgical first assistant following a specific intraoperative event?
• A piece of equipment malfunctions mid-procedure. What is the assistant's most appropriate immediate action?
• Which infection-control practice applies specifically to specimen handling after excision?

Because this domain is smaller, candidates sometimes assume it's low-yield and under-practice it. In reality, missing easy Ancillary Duties questions is one of the more avoidable ways to fall short of the 99-correct threshold. The Ancillary Duties study guide covers the full list of tested responsibilities.

Registration, Fees, and Test-Day Mechanics

Practice questions matter, but so does knowing the logistics that surround exam day. To sit for the CSFA exam, you must be a graduate of a CAAHEP-accredited Surgical First Assistant program. There's no substitute pathway around this prerequisite.

• Exam fee: $240 for AST members, $350 for all others.
• Renewal by continuing education: $45 CE fee.
• Renewal by examination: $450 for AST members, $550 for non-members.
• Testing location: PSI testing centers exclusively.
• Test-day rules: No textbooks, notes, study materials, or personal electronics allowed in the testing room. Scratch paper is provided by the center and must be returned before you leave.

For a full cost comparison across membership status and renewal paths, see the CSFA Certification Cost breakdown. And if you're still weighing whether the investment of time and fees pays off in your career, the CSFA ROI analysis lays out the considerations against typical CSFA salary data and CSFA job opportunities.

Building a Practice-Question Schedule Around the Domains

Generic study advice tells you to "review a little every day." For the CSFA exam specifically, the more useful approach is to allocate practice-question time in proportion to domain weight, then front-load the domain you're weakest in.

This weighting-first approach is covered in more depth, including week-by-week detail beyond practice questions, in the CSFA Study Guide for passing on the first attempt. The goal isn't to memorize a rigid calendar - it's to make sure your question practice mirrors the 55/31/14 split you'll actually face on exam day, something our full-length practice test platform is built around.

Common Mistakes Candidates Make on Practice Questions

After reviewing exam structure and domain data, a few patterns consistently trip up candidates preparing for the CSFA exam:

• Treating unscored questions casually: Since you can't identify the 25 pretest items among the 175, guessing which ones "don't count" and rushing through them is a losing strategy.
• Over-practicing Basic Science, under-practicing Perioperative Care: Basic Science questions often feel more familiar (closer to textbook recall), so candidates gravitate toward them - but Domain 1 carries almost twice the weight.
• Ignoring pacing: With 240 minutes for 175 questions, spending too long deliberating on "best answer" scenario questions early can leave you rushing through the back third of the exam.
• Not simulating test-day conditions: Since no personal materials are allowed in the PSI testing room, practicing exclusively with open notes or reference material nearby creates a false sense of preparedness.

Understanding the national context also helps set realistic expectations: the 2025 national first-take pass rate was 62%, meaning a meaningful share of well-trained candidates still don't pass on the first attempt. For the full data picture, including how pass rates are tracked, see the CSFA Pass Rate data analysis.

If terminology around the credential itself is still unclear before you dive into question banks, foundational resources like What Is CSFA?, CSFA Meaning, and What Does CSFA Stand For? are worth a quick read. Related explainers such as What Is A CSFA?, What Does CSFA Mean?, and What Is CSFA Certification? cover the same ground from slightly different angles, and the CSFA Certification overview plus CSFA Training pathways page fill in prerequisite details before you commit to a practice-question routine. You can also start working through realistic item sets right now on our CSFA practice test platform to see how your current knowledge maps against the 55/31/14 domain split.

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