CNRN Practice Test

This page provides practice questions and official details for the Certified Neuroscience Registered Nurse (CNRN) exam. Candidates can use these resources to prepare for the test format, review neuroscience nursing concepts, and understand the requirements set by the American Board of Neuroscience Nursing.

CNRN Exam at a Glance

What changed for CNRN in 2026

• Oct 25, 2026: Eligibility changed to Active RN license + 2,080 hours (1 yr full-time) of neuroscience nursing in the past 3 years (previously Active RN license + 2,080 hours (1 yr full-time) of neuroscience nursing in the last 3 years).^[3]
• Oct 25, 2026: Testing window changed to Oct 1–31, 2026 (also Mar 1–31 and Jul 1–31 each year) (previously Oct 1–31, 2026 (also Mar 1–31 and Jul 1–31)).^[1]
• Oct 25, 2026: Passing score changed to Scaled score of 200 (criterion-referenced; set by ABNN Board) (previously Scaled score of 200 (criterion-referenced cut set by the ABNN Board)).^[1]
• Oct 25, 2026: Score release changed to Pass/fail at the test site (by email for remote); digital badge in 4–6 weeks (previously Pass/fail at the test site (email for remote); digital badge in 4–6 weeks).^[1]

What the CNRN is and how it works

According to American Board of Neuroscience Nursing, “The exam consists of 220 multiple-choice items with a total testing time of four (4) hours. Twenty (20) out of the”^[1]

The Certified Neuroscience Registered Nurse (CNRN) exam is administered by the American Board of Neuroscience Nursing. To take the exam, candidates must have an active RN license and at least 2,080 hours of direct or indirect neuroscience nursing practice in the past 3 years. The exam is delivered via computer at PSI test centers or through Live Remote Proctoring.

The test consists of 220 multiple-choice items, with a time limit of 4 hours. The passing standard is a scaled score of 200, which is criterion-referenced and set by the ABNN Board. The fee is $300 for AANN members and $400 for nonmembers when paying by credit card. Testing is available during specific windows, such as Oct 1-31, 2026. Candidates are permitted to test once per window, but no more than 3 times in 12 months.

Pass/fail results are provided immediately at the test site or by email for remote testers. Successful candidates receive a digital badge within 4-6 weeks.

Worked examples: how to reason through CNRN questions

These are practice questions written for this site, not questions from the real exam. Each explanation shows why the right answer is right and why the others are wrong.

Example 1

Question: A patient begins having generalized tonic-clonic seizure activity. The nurse's FIRST priority action is to:

1. Insert an oral airway device
2. Protect the patient from injury and maintain airway patency
3. Administer IV lorazepam immediately
4. Restrain the patient's limbs to prevent injury

Answer: B. Protect the patient from injury and maintain airway patency

Explanation:

Option B is correct because protecting the patient from injury and maintaining airway patency is the absolute first priority during an active generalized tonic-clonic seizure. Option A is incorrect because inserting an oral airway during active seizing can cause severe dental or soft tissue injury. Option C is wrong because securing the airway and preventing immediate physical harm must occur before medication administration. Option D is incorrect because restraining a seizing patient can lead to bone fractures or muscle tears. The general rule during a seizure is to prioritize physical safety and airway protection above all other interventions.

Example 2

Question: Which finding on a lumbar puncture (LP) is most consistent with bacterial meningitis?

1. CSF glucose <40 mg/dL with elevated protein and cloudy appearance
2. Clear CSF with normal glucose and mildly elevated protein
3. Xanthochromic CSF with elevated RBCs
4. CSF glucose >60 mg/dL with lymphocytic pleocytosis

Answer: A. CSF glucose <40 mg/dL with elevated protein and cloudy appearance

Explanation:

Option A is correct because bacterial meningitis typically consumes glucose and produces protein, resulting in cloudy CSF with glucose below 40 mg/dL and elevated protein. Option B is incorrect as clear fluid with normal glucose is more typical of viral meningitis. Option C is wrong because xanthochromia with elevated red blood cells indicates a subarachnoid hemorrhage, not an infection. Option D is incorrect because elevated glucose and lymphocytic pleocytosis do not fit the typical bacterial profile. The rule to remember is that bacterial meningitis is characterized by low CSF glucose, high protein, and a turbid appearance.

Example 3

Question: The nurse is caring for a patient after a ventriculostomy (EVD) placement. Which action correctly manages the drainage system?

1. Level the air-fluid interface of the drip chamber to the specified reference point (usually tragus of the ear) before opening the drain
2. Zero the transducer at the level of the heart before obtaining ICP readings
3. Clamp the EVD for 1 hour after each position change before re-leveling
4. Keep the EVD open to drain continuously regardless of ICP values

Answer: A. Level the air-fluid interface of the drip chamber to the specified reference point (usually tragus of the ear) before opening the drain

Explanation:

Option A is correct because the external ventricular drain (EVD) drip chamber must be accurately leveled to a specific anatomical reference point, usually the tragus, to ensure correct drainage pressures. Option B is incorrect because an EVD is leveled to the head, not the heart like a CVP or arterial line. Option C is wrong because clamping an EVD for a full hour after repositioning is unnecessary and potentially dangerous if ICP rises. Option D is incorrect because an EVD is not simply left open continuously; it must be carefully managed against specific pressure parameters. Always ensure proper leveling before opening the system.

How to use these practice tests

Start by reviewing the official candidate handbook from the American Board of Neuroscience Nursing to understand the exam structure. Since you need 2,080 hours of experience to qualify, draw on your clinical background as you review.

• Take the CNRN Certified Neuroscience Registered Nurse set to evaluate your broad knowledge of neurological care and identify weak areas.
• Focus on specific clinical interventions using the CNRN Neurosurgical Nursing and Postoperative Care and CNRN Seizure Disorders and Epilepsy Management sets.
• Practice pacing yourself to ensure you can comfortably complete the 220 items within the 4-hour time limit.

Carefully read the explanations for every question to reinforce your understanding of pathophysiology and patient management, focusing on why certain actions take priority in acute neurological scenarios.

Sources & last verified

1. American Board of Neuroscience Nursing — number of questions, time limit, passing score, retake policy (official source). “The exam consists of 220 multiple-choice items with a total testing time of four (4) hours. Twenty (20) out of the” Verified Oct 25, 2026.
2. American Board of Neuroscience Nursing — exam fee (official source). “Credit card: $300 (AANN member) / $400 (nonmember)” Verified Oct 25, 2026.
3. American Board of Neuroscience Nursing — eligibility (official source). “1 year of full-time direct or indirect neuroscience nursing practice (i.e., 2,080 hours)” Verified Oct 25, 2026.

How we verify: editorial & fact-checking policy. Report an error: contact us.