Healthcare10 min read

FREE NBSTSA CSFA Surgical First Assistant Exam Guide 2026

A 2026 CSFA guide for surgical first assistants: NBSTSA eligibility, PSI scheduling, 175 questions, 99 passing score, perioperative care weights, basic science, and focused practice.

Ran Chen, EA, CFP®May 4, 2026

Key Facts

  • NBSTSA lists the CSFA exam as a 4-hour computer-based examination delivered after candidate eligibility approval.
  • The CSFA exam has 175 multiple-choice questions, including 150 scored items and 25 unscored pretest items.
  • NBSTSA lists 99 correct scored answers as the current passing point for the CSFA certification exam.
  • Perioperative Care is the largest CSFA content area at 55% of scored items and 83 questions.
  • Intraoperative Procedures account for 67 scored CSFA items, making them the highest-yield subarea for candidates.
  • Basic Science accounts for 31% of scored CSFA items, with Anatomy and Physiology contributing 36 items.
  • Ancillary Duties account for 14% of scored CSFA items, including equipment, sterilization, administration, and personnel duties.
  • CSFA candidates schedule through PSI only after NBSTSA approves eligibility and issues authorization to test.

CSFA in 2026: A Surgical Judgment Exam, Not a Memorized Anatomy Quiz

The NBSTSA Certified Surgical First Assistant (CSFA) exam validates the knowledge behind first-assist practice: exposure, hemostasis, tissue handling, closure support, equipment readiness, aseptic technique, anatomy, microbiology, pharmacology, and perioperative decision-making. Many competitor pages stop at "175 questions and 4 hours." That is not enough. The practical question is how to triage a blueprint where Perioperative Care is 55%, but Basic Science is still large enough to decide your pass/fail margin.

free CSFA practice questionsPractice questions with detailed explanations

Eligibility Comes Before Study Strategy

Do not buy materials until you have matched yourself to an NBSTSA eligibility route. The current NBSTSA CSFA application process and candidate handbook list routes such as current or previous CSFA certification and graduation from a CAAHEP-accredited Surgical First Assistant program. NBSTSA retains authority over eligibility, and application fees are not a substitute for approval. If your program status, documentation, or prior credential route is uncertain, resolve that first.

Once approved, candidates receive an Authorization To Test and schedule with PSI. That process matters because the exam is appointment-based and candidates must follow ID, scheduling, and test-center rules exactly.

The Blueprint Tells You How To Allocate Time

CSFA content areaScored itemsWeightPrep implication
Perioperative Care8355%The main pass/fail engine, especially intraoperative procedures
Basic Science4631%Anatomy dominates; microbiology and pharmacology add quick points
Ancillary Duties2114%Equipment, sterilization, administration, and personnel questions

Within Perioperative Care, intraoperative procedures carry 67 scored items. That is where first-assist judgment lives: exposure, retraction, hemostasis, tissue planes, closure, patient positioning, specimen and count awareness, and anticipating the surgeon's needs without exceeding scope.

How To Study the 99-Point Passing Standard

The passing score is not "about two thirds" in a casual sense; NBSTSA lists 99 correct out of 150 scored questions. Because 25 items are unscored pretest items, you will not know which questions count. Treat every item as scored and build enough margin that a hard form does not collapse your result.

Use practice blocks by function, not by chapter title. For example, run a 30-question intraoperative set, then immediately review anatomy for every structure named in the explanations. Pair anatomy with operative use: vessels for hemostasis, fascial layers for closure, nerves for positioning risk, and spaces/planes for exposure.

A 6-Week CSFA Prep Plan

Week 1: Confirm eligibility documents, read the candidate handbook, and map the content outline.

Weeks 2-3: Study intraoperative procedures. Focus on exposure, retraction, hemostasis, tissue handling, closure, wound classification, counts, specimens, and emergency response.

Week 4: Study anatomy and physiology in surgical context. Do not memorize structures in isolation; connect them to operative risk and first-assist actions.

Week 5: Cover microbiology, pharmacology/anesthesia, sterilization, equipment, and ancillary duties.

the CSFA practice bankPractice questions with detailed explanations

What Better CSFA Prep Looks Like

A strong candidate can answer two questions for every procedure: what is the first assistant doing right now, and what patient risk is that action preventing? That framing beats passive reading. Retraction protects exposure; hemostasis protects visualization and perfusion; positioning protects nerves and pressure points; closure protects tissue integrity and infection prevention.

PSI Exam-Day and Scope Traps

Once NBSTSA approves eligibility, the testing problem shifts to PSI logistics and first-assist scope. Confirm the name on your authorization, required ID, scheduling deadline, and reschedule rules before your final week. Do not assume hospital badge identity rules match test-center identity rules.

On content, watch for answers that exceed the first assistant role. CSFA questions can include attractive choices that sound surgically proactive but skip surgeon direction, break aseptic sequence, mishandle counts or specimens, or ignore tissue safety. The best answer is usually the action that supports exposure, hemostasis, closure, safety, and team flow within the role.

Official Sources To Check

Start with NBSTSA's CSFA certification page, then confirm application routes through the CSFA application process page. For study scope, use NBSTSA's CSFA exam prep page, including its official reference-list guidance.

The 2026 CSFA Takeaway

CSFA is a practical perioperative reasoning exam. The best preparation starts with eligibility, then spends the most time on intraoperative first-assist judgment while keeping Basic Science close enough to the OR to be useful. If you can connect anatomy, asepsis, equipment, and patient safety to the first assistant role, the blueprint starts to feel coherent instead of broad.

Test Your Knowledge
Question 1 of 3

Which CSFA content area has the greatest weight?

A
Ancillary Duties
B
Basic Science
C
Perioperative Care
D
Professional ethics only
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