Key Takeaways
- CNA exam has two parts: written (60-70 questions) and skills demonstration (3-5 skills)
- Passing score is 70% on written and 100% on each skill
- CNA certification is regulated at the state level with varying requirements
- Training programs range from 75-180 hours depending on state
- Different states use different testing vendors (NNAAP, Prometric, D&S, Headmaster)
Last updated: January 2026
About the CNA Certification Exam
The CNA (Certified Nursing Assistant) certification exam is required to work as a nursing assistant in healthcare facilities across the United States. CNAs provide essential direct patient care under the supervision of licensed nurses, making this certification a vital first step into the nursing profession.
Exam Overview
| Component | Details |
|---|---|
| Exam Type | Written/Oral + Skills Demonstration |
| Written Questions | 60-70 multiple-choice questions |
| Written Time | 90 minutes |
| Skills Test | 3-5 clinical skills to demonstrate |
| Skills Time | 25-40 minutes |
| Passing Score | 70% or higher on both portions |
| Testing Vendors | NNAAP, Prometric, D&S Diversified, Headmaster |
Two-Part Examination
The CNA exam consists of two separate components that you must pass:
1. Written (or Oral) Examination
- 60-70 multiple-choice questions covering nursing assistant knowledge
- 90 minutes to complete
- Tests theoretical knowledge of patient care
- Some states offer an oral examination option for those with reading difficulties
2. Clinical Skills Evaluation
- 3-5 randomly selected skills from a skills list
- 25-40 minutes to demonstrate competency
- Performed on a mannequin or simulated patient
- Evaluated by a trained nurse aide evaluator
- Must perform each skill correctly to pass
State-Specific Requirements
CNA certification is regulated at the state level, which means requirements vary:
| Requirement | Varies By State |
|---|---|
| Training Hours | 75-180 hours minimum |
| Clinical Hours | 16-100 hours minimum |
| Minimum Age | 16-18 years old |
| Background Check | Required in all states |
| Reciprocity | Available between most states |
| Renewal Period | Every 2 years (most states) |
| Work Requirement | 8-16 hours within renewal period |
Testing Vendors by State
Different states use different testing companies:
| Testing Vendor | States Using |
|---|---|
| NNAAP | Most states (default) |
| Prometric | FL, MI, NY, and others |
| D&S Diversified | AZ, TN, OR, OH |
| Headmaster | IL, KS, MO, and others |
Path to Certification
- Complete approved training program (75-180 hours)
- Submit application to your state nursing assistant registry
- Pass background check (criminal and abuse registry)
- Schedule and pass written exam (70% minimum)
- Schedule and pass skills exam (100% on each skill)
- Receive certification and registry placement
Test Your Knowledge
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Test Your Knowledge
How many parts does the CNA certification exam have?
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