- You need 70% correct across 149 questions to pass the AMCA NAC exam.
- Patient Care Skills carries 41% of the blueprint weight - master it first.
- You have 2 hours 45 minutes to finish, roughly 66 seconds per question.
- The $119 exam fee includes study material; paper testing adds $25, live remote proctoring adds $40.
The NAC Passing Score, Explained
If you're preparing for the American Medical Certification Association (AMCA) Nursing Assistant Certification, the number that matters most is 70%. That's the passing score set by AMCA for the NAC exam, and it applies uniformly regardless of whether you test online, on paper, or with a live remote proctor. There's no sliding scale, no curve, and no regional variation - 70% correct out of 149 scored questions gets you certified.
That single number, though, doesn't tell you much on its own. What matters more is where those points come from, because the exam isn't a flat pool of random trivia. It's built from a weighted blueprint that favors certain domains heavily over others. Understanding that weighting is the difference between studying efficiently and studying blindly. For a full breakdown of what each domain covers, see our NAC Exam Domains 2026: Complete Guide to All 7 Content Areas.
How the 70% Threshold Actually Works
The NAC exam pulls 149 multiple-choice-style questions from a bank aligned to AMCA's official blueprint. Each question contributes to your overall percentage, and the passing threshold is applied to the total score rather than to each domain individually. In practical terms, this means a candidate who is exceptionally strong in Anatomy and Physiology but weaker in Medical Law and Ethics can still pass overall - as long as the combined correct-answer percentage clears 70%.
That structure matters strategically. Because there's no domain-by-domain minimum, your best use of study time is to shore up your weakest areas within the highest-weighted domains first, rather than spreading effort evenly across all seven content areas. A weak spot in a 1%-weighted domain barely moves your score. A weak spot in a 41%-weighted domain can sink it.
Key Takeaway
Because the 70% cutoff applies to your total score, not per-domain minimums, prioritize Patient Care Skills and Anatomy and Physiology over lower-weighted domains like Pharmacology and EKG.
Domain-by-Domain: Where Points Live
AMCA publishes an official blueprint with seven domains, each carrying a fixed percentage of the exam. Here's exactly how the 149 questions are distributed:
| Domain | Weight | Approx. Questions |
|---|---|---|
| Patient Care Skills | 41% | ~61 |
| Anatomy and Physiology | 14% | ~21 |
| Safety/Infection Control | 13% | ~19 |
| Medical Law and Ethics | 13% | ~19 |
| Medical Terminology | 13% | ~19 |
| Pharmacology | 5% | ~7 |
| EKG | 1% | ~1-2 |
This weighting tells you almost everything about how to allocate study hours. Patient Care Skills alone accounts for more of the exam than Safety/Infection Control, Medical Law and Ethics, and Medical Terminology combined. If you only had time to master one domain deeply, this is the one.
Patient Care Skills (41%)
This domain covers hands-on nursing assistant duties: vital signs, mobility and transfer techniques, activities of daily living (bathing, feeding, toileting), positioning, restorative care, and documentation of observations. Because it's nearly half the exam, questions here often present multi-step scenarios rather than one-line facts.
- Know correct sequences for transfers and ambulation assistance
- Understand normal vital sign ranges and when to report abnormal readings
- Be comfortable with ADL support across different levels of patient independence
Anatomy and Physiology (14%)
Expect body systems questions - musculoskeletal, cardiovascular, respiratory, integumentary - framed around function and common conditions rather than pure memorization of structures.
- Link each body system to the type of care a nursing assistant might provide
- Recognize common aging-related changes across systems
Safety/Infection Control (13%)
This domain tests standard precautions, PPE use, fall prevention, fire and emergency procedures, and infection-control basics like hand hygiene and isolation protocols.
- Memorize the order of PPE donning and removal
- Know isolation precaution types and when each applies
Medical Law and Ethics (13%)
Covers patient rights, confidentiality (HIPAA-style concepts), abuse reporting obligations, informed consent, and the scope of practice limits for a nursing assistant.
- Understand mandatory reporting requirements
- Know what falls inside vs. outside a nursing assistant's legal scope
Medical Terminology (13%)
Prefixes, suffixes, root words, and abbreviations used in clinical documentation and verbal handoffs.
- Build fluency with common roots (cardio-, -itis, -ectomy, etc.)
- Practice reading terminology in context, not just isolated flashcards
Pharmacology (5%) and EKG (1%)
These are the lowest-weighted domains. Pharmacology touches basic medication categories and safe handling awareness; EKG covers only foundational recognition concepts. Neither warrants heavy time investment relative to Patient Care Skills.
- Learn broad medication classes, not dosing calculations
- Recognize basic EKG terminology at a conceptual level only
For a deeper walkthrough of each content area with sample question styles, our NAC Exam Domains 2026 guide goes further into what to expect on test day.
Exam Format, Timing, and Registration Mechanics
The NAC exam consists of 149 questions with a 2 hour 45 minute time limit. That works out to roughly 66 seconds per question on average - comfortable if you know the material, tight if you're second-guessing every answer. Time management matters less for content mastery and more for pacing discipline: don't let a handful of Patient Care Skills scenario questions eat the clock you need for the rest of the exam.
AMCA offers three testing formats:
- Online testing - included in the base $119 fee, which also covers study materials
- Paper-based testing - adds a $25 fee on top of the base cost
- Live remote proctoring - adds a $40 fee for candidates who need a proctored remote session
Choosing a format is mostly about logistics and comfort. If you have reliable internet and prefer testing from home without proctoring overhead, standard online testing is the most economical route. If you need flexibility around testing centers or prefer a paper format, budget for the added fee. For a full cost breakdown including these add-ons, see NAC Certification Cost 2026: Complete Pricing Breakdown.
Scheduling Your Prep Around the Blueprint
Generic study techniques - spaced repetition, timed practice blocks, active recall - work fine for the NAC exam, but they only pay off when applied against the actual blueprint weighting rather than spread evenly. Here's one way to sequence a multi-week prep window that respects how the exam is actually weighted:
Patient Care Skills (41%)
- Drill ADL support scenarios, transfer techniques, and vital sign interpretation
- Use scenario-based practice questions, not just fact recall
Anatomy and Physiology + Safety/Infection Control (28% combined)
- Connect body systems to real care situations
- Memorize PPE sequences and isolation precaution types
Medical Law and Ethics + Medical Terminology (26% combined)
- Review scope-of-practice boundaries and reporting obligations
- Practice terminology in context using sample documentation
Pharmacology + EKG (6% combined) + Full Review
- Light pass on medication classes and basic EKG concepts
- Take full-length timed practice exams to build pacing under the 2:45 limit
This sequencing isn't arbitrary - it mirrors the point value of each domain, so your earliest and most energetic study sessions go toward the material that determines the largest share of your score. For a structured week-by-week plan with more detail, see our NAC Study Guide 2026: How to Pass on Your First Attempt.
Common Miscalculations About "Passing"
A few misconceptions tend to trip up candidates who are otherwise well-prepared:
- "I need to pass every domain." Not true - the 70% threshold applies to your overall score, not each domain separately. You can be weaker in EKG and still pass comfortably if Patient Care Skills is solid.
- "AMCA NAC certification is the same as my state CNA license." It isn't. The AMCA NAC is a separate national credential distinct from state-issued CNA certification or licensure, and the two serve different purposes. Understand this distinction before you assume one substitutes for the other - see What Is NAC Certification? for clarification.
- "70% sounds hard." Context matters here - AMCA's own reported statistics show a 93% pass rate for 2024, meaning most prepared candidates who sit for the exam do clear the bar. For a deeper look at what the pass-rate data actually implies, read NAC Pass Rate 2026: What the Data Shows.
- "I can guess my way past low-weighted domains." You can absorb some losses in Pharmacology or EKG, but treating every low-weight domain as skippable adds up fast across five smaller domains totaling nearly half the exam's remaining weight.
If you're still weighing how challenging this exam is relative to other certifications, our How Hard Is the NAC Exam? Complete Difficulty Guide 2026 puts the difficulty in more concrete terms.
After You Clear 70%
Passing isn't the finish line for your credential's usefulness - it's the start of a two-year certification cycle. AMCA certifications remain valid for two years, after which renewal requires 10 continuing-education credits. Plan for that early rather than scrambling near expiration.
Once certified, the NAC credential opens doors with employers who hire nursing assistants across long-term care facilities, hospitals, home health agencies, and rehabilitation centers - though it's worth remembering this is an AMCA credential distinct from state CNA licensure, so check what your target employer or state actually requires before assuming interchangeability. For a look at earning potential tied to this credential, see our NAC Salary Guide 2026: Complete Earnings Analysis, and if you're still deciding whether the certification is worth pursuing at all, Is the NAC Certification Worth It? Complete ROI Analysis 2026 breaks down the return on investment.
To sharpen your readiness before exam day, run through realistic scored questions on our NAC practice test platform, which mirrors the blueprint weighting so your practice time reflects the real distribution of points. Combining that with a focused review of our NAC Cheat Sheet 2026: One-Page Review of Must-Know Facts in your final days of prep can help lock in the highest-yield material.
FAQ
You need 70% correct out of 149 scored questions. There is no domain-by-domain minimum - only your overall percentage matters.
Since 70% of 149 is roughly 104 correct answers, you can miss around 45 questions and still be certified, assuming your correct answers total at least 70%.
No. The 70% passing threshold is identical across all three formats - online, paper-based, and live remote proctored. Only the fees differ, with paper adding $25 and live remote proctoring adding $40 on top of the $119 base fee.
Patient Care Skills, which carries 41% of the blueprint - nearly triple the next-highest domains. Strong performance here has an outsized effect on your overall percentage.
No. The AMCA NAC is a distinct national certification, separate from state-issued CNA certification or licensure. Check your state's specific requirements if you need CNA licensure for employment.
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