Illinois CNA
Illinois Certified Nurse Assistant (CNA) Competency Examination
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Cheat sheet
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ExploreCommon mistakes
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ExploreAbout this exam
The Illinois Certified Nurse Assistant (CNA) credential is the state recognition that allows a nurse aide to work in long-term care and other regulated health care settings in Illinois. Candidates typically complete an approved nurse aide training program first, then sit for a competency examination; the Illinois Department of Public Health oversees the certification process and maintains the Health Care Worker Registry, where a worker's certification status can be looked up. The exam is built around the core duties of direct care: basic nursing skills, personal care skills, mental health and social service needs, resident rights, care of cognitively impaired residents, basic restorative services, infection control, and safety and emergency procedures. Because these domains are weighted evenly, a candidate cannot afford to skip any of them - a strong performance in personal care will not offset weak knowledge of residents' rights or infection control. Preparation usually means a mix of content review and repeated hands-on rehearsal of the skills taught in the training program, since the exam tests both what you know and how reliably you perform routine care. Confirm all logistics - scheduling, fees, retake rules, and scoring - with your approved training program or the state before test day.
What you'll study
About Illinois CNA preparation
What topics does the Illinois CNA exam cover?
Expect content drawn from eight areas: basic nursing skills, personal care skills, mental health and social service needs, resident rights, care of cognitively impaired residents, basic restorative services, infection control, and safety and emergency procedures. The areas are treated as equally weighted, so divide your study time roughly evenly rather than lingering on your favourite topic.
How many questions are on the exam, and how long do I have?
Those details are set by the state and the testing vendor and are not published on the IDPH pages summarized here, so treat any number you hear second-hand with suspicion. Ask your approved nurse aide training program or check the current candidate handbook for the exact item count and time limit before you schedule.
What score do I need to pass?
Illinois does not publish a passing standard on the general IDPH website, and the requirement can differ between the written and any practical portion of the exam. Your training program and the official candidate bulletin are the authoritative sources. Do not rely on a passing percentage quoted by another candidate.
Can I retake the exam if I fail?
Retake rules, waiting periods, and any additional fees are governed by the state and the testing vendor, and they are not stated in the source material summarized here. Contact your training program or the state to confirm how many attempts are allowed and what the process is. Plan to pass on the first attempt regardless.
How do I check whether my certification is active?
Use the Health Care Worker Registry, which the Illinois Department of Public Health links from its website. The registry is the official place to verify a nurse aide's status, and employers will check it too. Look up your own record before applying for work so any discrepancy can be corrected early.
How hard is the exam?
The content is entry-level, but it is broad, and the even weighting across eight domains means shallow preparation shows quickly. Candidates who read the material once and never practise the skills tend to struggle more than the material itself justifies. Steady review plus hands-on repetition is usually enough.
What order should I study in?
Start with infection control and safety, because those principles recur inside almost every other skill question. Then work through personal care and basic nursing skills, which carry the most procedural detail, and finish with resident rights, cognitive impairment, mental health needs, and restorative services. Cycle back through all eight areas before test day.
What do candidates most often get wrong?
Common trouble spots are hand hygiene and transmission precautions, the difference between a resident's right and a staff convenience, and safety decisions such as when to report a change instead of acting alone. Questions about cognitively impaired residents also trip people who answer with logic instead of person-centred redirection.
Is the state exam the same thing as my training program's final?
No. Your program's tests measure progress through the course; the competency exam is a separate state-recognized requirement. Passing a program final does not guarantee success on the exam, so review the eight content domains independently rather than relying on your class notes alone.