2.1 CNA Scope of Practice

What Scope of Practice Means

Scope of practice is the legally defined range of tasks a Certified Nursing Assistant (CNA) may perform, based on training, certification, and delegation by a licensed nurse. It is not a suggestion or a personal preference; it is enforced by law. Exam writers test this heavily because working outside scope is the fastest way to harm a resident and lose certification.

Four layers define your scope, from broadest to most specific:

• Federal law — the Omnibus Budget Reconciliation Act of 1987 (OBRA ’87) sets the national floor: at least 75 training hours, including a minimum of 16 supervised clinical hours, plus a competency exam (written/oral test + skills demonstration) before working more than 4 months.
• State Nurse Practice Act — each state defines what a CNA versus a nurse may do.
• State Board of Nursing / nurse aide registry — issues rules and may add advanced tasks.
• Facility policy — may further restrict (never expand) what you do.

When layers conflict, the most restrictive rule wins. If facility policy forbids a task your state allows, you do not do it.

Tasks Inside the CNA Scope

CNAs deliver hands-on, non-invasive care under nurse supervision. Memorize these categories — "Activities of Daily Living" (ADLs) and vital signs appear on nearly every exam.

Tasks Always Outside Scope

These require a licensed nurse, regardless of who asks. A nurse asking you to do them does not make it legal.

Notice the pattern: CNAs observe and report; nurses assess and decide. "Assess" is a trap word — a CNA observes a red heel and reports it; the nurse assesses whether it is a pressure injury.

State Variations and Delegated Advanced Tasks

Some states permit extra tasks only after additional training and explicit nurse delegation. These are not automatic and vary widely:

• Blood glucose fingersticks — e.g., a North Carolina CNA II may perform them after extra training and registry listing; a standard CNA in most states may not.
• Feeding through an established G-tube — permitted in some states.
• Tracheostomy or oral suctioning — some states with specialized training.
• Medication aide / CMA role — separate certification allowing routine medication passes in certain settings.

Worked scenario

A family member says, "You gave my mother her pill yesterday, so give it now." Even if you watched a nurse do it, you decline — medication administration is outside a standard CNA's scope. The correct response: "I'm not authorized to give medications. I'll get the nurse right away."

Common traps

1. A physician order does not expand CNA scope — only a nurse can delegate within legal limits.
2. "I've done it before" is irrelevant; legality, not familiarity, governs.
3. Being short-staffed never justifies working outside scope.

Working outside scope risks patient harm, certification revocation, civil negligence liability, criminal charges, and termination. When unsure, stop and ask the nurse.

How Scope Connects to the Certification Exam

Understanding scope is not just theory; it is how you pass the state competency exam that follows OBRA training. That exam has two parts that every state administers: a written (or oral) knowledge test, usually multiple choice, and a hands-on skills demonstration where you perform a small set of randomly selected skills in front of an evaluator. The most common skill-test failures are scope-adjacent safety steps people skip under pressure — forgetting hand hygiene, not raising side rails or locking wheel brakes, omitting privacy (closing the curtain), or failing to check the resident's identity before care.

Each of those is a hard stop that can fail the whole station.

Think in two verbs the exam loves: a CNA observes and reports; a nurse assesses and decides. Any answer choice that has the CNA interpreting data, choosing a treatment, or judging a diagnosis is almost always wrong.

Quick self-check before any task

Before performing a delegated task, run this mental checklist:

1. Is it in my scope? Could a CNA legally do this in my state?
2. Am I competent? Have I been trained and checked off on it?
3. Is the resident appropriate? Are they stable, or do they need a nurse?
4. Do I have what I need? Right equipment, enough help, a clear order from the nurse.
5. Will the nurse be available if something goes wrong?

If any answer is no, you stop and tell the nurse. This single habit prevents the majority of scope violations and is exactly the judgment the exam rewards. Scope is ultimately about humility: knowing the line between helping and harming, and never crossing it because someone is busy, because you did it once before, or because you feel confident in the moment.