How hard is the RNC-OB exam?

RNC-OB is an advanced specialty certification for care of hospitalized pregnant patients from 20 weeks through discharge, including labor, postpartum, and normal newborn care. Labor and Birth is the largest domain at 36%. NCC uses criterion-referenced pass/fail scoring and does not publish a fixed passing percentage.

How many questions are on the RNC-OB exam?

The RNC-OB exam has 175 multiple-choice questions, of which 150 are scored and 25 are unscored pretest items. You are given 3 hours to complete the exam.

What score do I need to pass the RNC-OB exam?

NCC uses criterion-referenced pass/fail scoring and does not publish a fixed percentage cutoff. Results are reported as pass or fail rather than as a percentage.

How long should I study for the RNC-OB exam?

Study time varies with inpatient obstetric experience and diagnostic performance. Allocate review using the official weights: Labor and Birth 36%, Pregnancy Complications 28%, Fetal Assessment 17%, Recovery/Postpartum/Newborn Care 16%, and Professional Issues 3%.

What's included for free?

All study guides, practice questions, and explanations are completely free. We also include 10 AI-powered questions daily. For unlimited AI assistance, you can upgrade to Pro.

Why is the content free?

OpenExamPrep was founded by Ran Chen, a CFP® who passed multiple financial exams and believes quality exam prep shouldn't cost hundreds of dollars. With AI, we can create quality content at scale and make it accessible to everyone.

Is the content up to date?

Yes. Our content is aligned with the latest exam outlines and updated regularly. Last update: January 2026.

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Free RNC-OB Exam Prep

Inpatient Obstetric Nursing

Prepare for the RNC-OB exam without spending hundreds on expensive prep courses. Free study guides, practice questions, flashcards, and related exam resources.

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Updated January 2026

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RNC-OB Inpatient Obstetric Nursing

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100 Practice Questions

Covers all NCC content domains for inpatient obstetric nursing.

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What You'll Study

5 chapters covering the exam topics in this guide

Chapter 1: Antepartum Assessment and Management

5 sections

Chapter 2: Intrapartum Labor Physiology & Fetal Monitoring

5 sections

Chapter 3: Intrapartum Complications & Delivery Management

4 sections

Chapter 4: Postpartum Care & Complications

5 sections

Chapter 5: Neonatal Care & Professional Issues

4 sections

RNC-OB Exam Details

Inpatient Obstetric Nursing

Administered by National Certification Corporation (NCC)

Official Source

Criterion-referenced pass/fail; no fixed percentage

Passing Score

175

Questions

Hours

$325

Exam Fee

Study time: Varies by experience and diagnostic performance

Prerequisites: Current, active, unencumbered U.S. or Canadian RN license; 24 months and at least 2,000 hours of specialty practice, with specialty employment sometime in the preceding 24 months.

Valid for: 3 years

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Inpatient Obstetric Nursing