200+ Free CGRN Practice Questions

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Question 1

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Which sphincter separates the esophagus from the stomach?

Pyloric sphincter

Lower esophageal sphincter (LES)

Ileocecal valve

Sphincter of Oddi

to track

2026 Statistics

Key Facts: CGRN Exam

175

Total Questions

150 scored

3 hrs

Exam Time

ABCGN

55-60%

Pass Rate

ABCGN 2025

35%

GI Procedures

Largest domain

$430-520

Exam Fee

ABCGN 2026

5 years

Certification Valid

Recertification cycle

The CGRN exam contains 175 questions (150 scored) over 3 hours. Content covers GI nursing across four domains with Gastroenterological Procedures being the largest at 35%. Pass rates range from 55-60%. Eligibility requires current RN license plus 2 years and 4,000 hours of GI/endoscopy nursing experience. ABCGN certification demonstrates expertise in gastroenterology nursing, endoscopic procedures, and patient care.

Sample CGRN Practice Questions

Try these sample questions to test your CGRN exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 200+ question experience with AI tutoring.

1Which sphincter separates the esophagus from the stomach?

A.Pyloric sphincter

B.Lower esophageal sphincter (LES)

C.Ileocecal valve

D.Sphincter of Oddi

Explanation: The lower esophageal sphincter (LES), also called the cardiac sphincter, is located at the gastroesophageal junction and prevents gastric reflux into the esophagus. The pyloric sphincter separates the stomach from the duodenum, the ileocecal valve separates the ileum from the cecum, and the sphincter of Oddi controls bile and pancreatic juice flow into the duodenum.

2What is the primary function of the duodenum?

A.Water absorption

B.Chemical digestion of chyme

C.Feces storage

D.Bile production

Explanation: The duodenum is the first section of the small intestine where chemical digestion continues through the action of bile from the liver/gallbladder and enzymes from the pancreas. Water absorption occurs primarily in the large intestine, feces are stored in the rectum, and bile is produced by the liver.

3Which organ produces bile necessary for fat digestion?

A.Pancreas

B.Gallbladder

C.Liver

D.Stomach

Explanation: The liver produces bile, which is essential for emulsifying fats. The gallbladder stores and concentrates bile but does not produce it. The pancreas produces digestive enzymes and bicarbonate. The stomach secretes gastric acid and pepsin.

4A patient with GERD experiences heartburn due to backflow of gastric contents into the esophagus. What is the underlying mechanism?

A.Excessive acid production

B.Incompetent lower esophageal sphincter

C.Hiatal hernia only

D.Delayed gastric emptying

Explanation: While hiatal hernia, excessive acid, and delayed gastric emptying can contribute to GERD, the primary mechanism is an incompetent or relaxed lower esophageal sphincter (LES) that allows gastric contents to reflux into the esophagus. This is the key pathophysiological factor in GERD.

5Which condition is characterized by inflammation and ulceration of the colonic mucosa?

A.Crohn's disease

B.Ulcerative colitis

C.Diverticulitis

D.Irritable bowel syndrome

Explanation: Ulcerative colitis is characterized by continuous inflammation and ulceration limited to the colonic mucosa, typically starting in the rectum. Crohn's disease can affect any part of the GI tract with transmural inflammation. Diverticulitis involves inflamed pouches in the colon wall. IBS is a functional disorder without mucosal changes.

6A 58-year-old patient presents with progressive dysphagia to solids and unintentional weight loss. Which assessment finding warrants immediate further investigation?

A.Occasional heartburn after meals

B.Progressive solid food dysphagia with weight loss

C.Mild bloating after eating

D.Occasional constipation

Explanation: Progressive dysphagia to solids accompanied by unintentional weight loss in an older adult is a red flag for esophageal malignancy and requires immediate diagnostic evaluation, typically with endoscopy. This presentation is concerning for mechanical obstruction from a mass or stricture.

7When assessing a patient for dehydration, which finding is most specific?

A.Increased blood pressure

B.Decreased skin turgor

C.Bounding pulse

D.Hyperventilation

Explanation: Decreased skin turgor (tenting of the skin when pinched) is a classic sign of dehydration. Dehydrated patients typically have decreased blood pressure, weak/thready pulses, and normal respiratory patterns. Skin turgor assessment is most reliable in assessing hydration status.

8A patient scheduled for a screening colonoscopy asks about bowel preparation. Which statement by the nurse is most accurate?

A.You only need a clear liquid diet the morning of the procedure

B.Complete bowel cleansing is essential for accurate visualization

C.You may eat normally until midnight before the procedure

D.Bowel prep is optional for thin patients

Explanation: Complete bowel cleansing is essential for accurate visualization during colonoscopy. Residual stool can obscure polyps and lesions, reducing the effectiveness of the examination. Patients must follow the specific prep protocol, typically involving a clear liquid diet and laxative preparation the day before.

9When educating a patient with celiac disease about dietary management, which instruction is most important?

A.Avoid all dairy products

B.Strictly eliminate gluten-containing foods

C.Limit fiber intake

D.Avoid all meat products

Explanation: Celiac disease requires strict, lifelong elimination of gluten (found in wheat, barley, and rye). Even small amounts of gluten can trigger an autoimmune response causing villous atrophy. Dairy, fiber, and meat are not restricted unless the patient has concurrent lactose intolerance or other conditions.

10Under HIPAA regulations, when can a nurse share patient health information with family members?

A.Only with written consent

B.When the patient is present and does not object

C.Never under any circumstances

D.Only with a court order

Explanation: Under HIPAA, health information may be shared with family members or friends if the patient is present and does not object, or if the patient is incapacitated and the disclosure is in the patient's best interest. Written consent is preferred but not always required in these situations.

About the CGRN Exam

The CGRN certification validates specialized knowledge and skills in gastroenterology and endoscopy nursing. The exam covers four domains: General Nursing Care (21%), Gastroenterological Procedures (35%), Patient Care Interventions (25%), and Environmental Safety, Infection Prevention and Control (19%). The exam consists of 175 items (150 scored, 25 unscored pretest) and demonstrates competency in GI anatomy, procedural assistance, sedation monitoring, specimen handling, and infection control.

Questions

175 scored questions

Time Limit

3 hours

Passing Score

Scaled 450/800 (approximately 70%)

Exam Fee

$430-520 (ABCGN (American Board of Certification for Gastroenterology Nurses) / Prometric)

CGRN Exam Content Outline

21%

General Nursing Care

GI anatomy and physiology, pathophysiology, assessment and analysis, plan of care development, patient education, pharmacology, patient rights and privacy, standards of clinical practice

35%

Gastroenterological Procedures

Endoscopic procedures (EGD, colonoscopy, ERCP, EUS), non-endoscopic procedures, equipment and accessories, sedation and anesthesia, complications management, specimen handling, therapeutic endoscopy, assisting techniques

25%

Patient Care Interventions

Recognizing and responding to emergent changes, resuscitation, promoting wellness, GI healthcare management, medication administration, IV therapy, pain management, nutrition support, patient resources

19%

Environmental Safety & Infection Prevention

Infection prevention in endoscopy, equipment reprocessing, sterilization and high-level disinfection, PPE use, pathogen transmission, MDRO management, environmental safety, chemical safety, body mechanics

How to Pass the CGRN Exam

What You Need to Know

Passing score: Scaled 450/800 (approximately 70%)
Exam length: 175 questions
Time limit: 3 hours
Exam fee: $430-520

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

CGRN Study Tips from Top Performers

1Master GI anatomy including the biliary system and pancreatic duct anatomy for ERCP

2Know endoscopic procedures including EGD, colonoscopy, ERCP, and EUS indications and complications

3Understand sedation monitoring including levels of sedation and reversal agents

4Study infection prevention including high-level disinfection and C. difficile precautions

5Learn specimen handling including proper labeling and preservation methods

6Review GI pathophysiology including GERD, IBD, liver disease, and pancreatitis

7Understand nursing assessment including recognition of complications and emergent changes

8Study pharmacology including conscious sedation agents and GI medications

9Know professional issues including HIPAA, patient rights, and scope of practice

10Practice with exam-style questions across all four content domains

Frequently Asked Questions

What is the CGRN exam?

The CGRN (Certified Gastroenterology Registered Nurse) is a specialty certification offered by ABCGN (American Board of Certification for Gastroenterology Nurses). It validates advanced knowledge and skills in gastroenterology and endoscopy nursing, including procedural assistance, patient care, and infection prevention.

What are the CGRN eligibility requirements?

To sit for the CGRN exam, you must have: (1) Current unrestricted RN license in the U.S. or Canada, (2) Minimum 2 years (4,000 hours) of GI/endoscopy nursing experience, and (3) Two professional references from the gastroenterology field. Experience may be in clinical, supervisory, administrative, teaching, or research roles.

How many questions are on the CGRN exam?

The CGRN exam contains 175 questions total, with 150 scored questions and 25 unscored pretest questions. You have 3 hours to complete the exam. The exam is administered via computer-based testing at Prometric testing centers.

What content areas are covered on the CGRN exam?

The CGRN exam covers four domains: General Nursing Care (21%), Gastroenterological Procedures (35%), Patient Care Interventions (25%), and Environmental Safety, Infection Prevention and Control (19%). Gastroenterological Procedures is the largest domain, reflecting the importance of endoscopic and non-endoscopic procedures in GI nursing.

What is the CGRN pass rate?

The CGRN pass rate is approximately 55-60% for first-time test-takers. The exam uses scaled scoring from 200-800, with a passing score of 450. The pass rate reflects the exam's rigor and specialized nature. ABCGN monitors pass rates and provides resources to support candidate success.

How long is CGRN certification valid?

CGRN certification is valid for 5 years. Recertification can be achieved through continuing education (75 contact hours in gastroenterology nursing) or by retaking the exam. ABCGN requires proof of active practice and continuing professional development.

How should I prepare for the CGRN exam?

Study systematically across all four domains. Use the ABCGN Test Blueprint and CGRN Candidate Handbook, GI nursing textbooks (such as SGNA's Core Curriculum), and practice questions. Focus on high-yield areas including endoscopic procedures, sedation monitoring, infection prevention, and GI pathophysiology. Plan for 3-4 months of dedicated study time.