Pass the CNSC Exam with confidence.

Join over 250 dietitians who trust Edge Clinical Nutrition to help them pass the CNSC exam.

Get the study guide today

 Is this you? 

You're thinking about taking the CNSC Exam, but don't know where to start.

The CNSC Exam is extremely technical, and has no official study guide.

You get test anxiety, and are nervous about taking the CNSC Exam.

You have a good foundation in nutrition support, but lack the confidence to pass the exam without additional support.

You need to renew your CNSC certification, but need to brush up on exam content.

The exam has changed significantly in the past few years, and you don't have time to read the ASPEN Core from cover to cover.

The CNSC Exam is a challenging, technical test that’s become even harder in recent years. There is no official study guide for this exam, leaving candidates lost and overwhelmed.

How do I know when I'm ready to take the CNSC Exam?

How long should I study for this exam?

Why has the CNSC Exam gotten so hard?

What do I need to memorize for the exam?

Will there be math on the exam?

How can I prepare for pediatric exam questions?

What if I am recertifying?

 

 

 

 

 

 

Introducing

The CNSC Exam Study Guide

by Edge Clinical Nutrition

This comprehensive 100-page study guide and online course is expertly designed to help you pass the CNSC Exam with ease and confidence.

Say goodbye to overwhelming textbooks, boring webinars, and confusing case studies that only add stress to your study routine. This study guide and course answers all of your questions and maximizes your study time!

Get access to:

100-Page Printed Study Guide

 

This comprehensive resource provides structured exam content with all 51 content categories on the exam. It follows the NBNSC content outline to a T, showing exactly what you need to know for each content area. No need to slog through the entire 847-page ASPEN Core Curriculum textbook!

12 Practice Exams

 

Designed to mirror real-life questions, these will help boost your confidence, spot your weak areas, and crush the exam.

 This content is available in the bundle only.

Pediatric Notes

 

Focus only on the content you need to know for the CNSC Exam. This 10-page resource helps you make the most of your study sessions, without overwhelming you with pediatric content not relevant to the exam.

Newly expanded for the 2026 exams!

400 Quizlet Flashcards

 

Perfect for memorizing those essential numbers, terms, and concepts that come up on the exam.

 

 This content is available in the bundle only.

Acid/Base Balance Module

Demystify acid/base balance once and for all with a lecture that actually teaches acid/base balance. This lecture presents everything you need to know about acid/base balance (including when and how to adjust for it in PN orders), in a clear & concise way.

 This content is available in the bundle only.

Acid/Base Quick Reference Guide

Use this beautiful, full-color reference guide in your studying & clinical work. Provided on a high-quality postcard, printed front and back.

 

 This content is available in the bundle only.

Fluid & Electrolyte Balance Module 

Added by popular demand: Watch three comprehensive video lectures that explain the ins and outs of fluid and electrolyte balance, including common types of IV fluids, and types of hypo and hypernatremia.

 This content is available in the bundle only.

Home Nutrition Support Module

 

Learn about recent Medicare Part B updates, and criteria for home nutrition support in this dynamic and informative lecture.

 This content is available in the bundle only.

21-Page Medications Quick Reference Guide 

 

Fully expanded for the 2026 exams, this resource provides all the important medications you need to know for the exam in a clear, comprehensive guide.

 This content is available in the bundle only.

PN Calculation Cheat Sheet 

Learn to calculate PN orders without relying on apps or spreadsheets (which you'll be expected to do on the exam) with my 15-page PN Calculation Cheat Sheet. I walk you through the PN dosing, math, stability, and calculations for 3-in-1 and 2-in-1 CPN and PPN in this comprehensive guide.

 

 This content is available in the bundle only.

 Live Study Sessions 

 

Learn study strategy, last-minute exam prep, and drill down important content just before the exam with three live Zoom sessions presented by Sara, and other subject matter experts. 

NEW: Study Group 

Get 1-on-1 study help, access to new resources as they are released, video explanations, voice notes, and more with my brand new 14-week study group. These groups run January-April for Spring test takers, and July-October for the Fall exam. 

Meet Your Instructor

 

Sara Griffin, MS, RDN, CNSC is a currently practicing clinical dietitian specializing in critical care nutrition & nutrition support. 
She has precepted dozens of interns, and has received accolades for her precepting work.
Sara was selected as Colorado Dietitian of the Year, and has been twice nominated for an Academy of Nutrition and Dietetics Excellence in Practice award for her innovative nutrition courses and study guides, and significant contributions to the field of dietetics (Entrepreneurial category, 2024, 2025).
She holds her ASHP/ASPEN Nutrition Support Certificate, a clinical nutrition certificate from Duke University, and is a CDR-certified CPEU provider.

Meet Your Instructor

 
Sara Griffin, MS, RDN, CNSC is a currently practicing clinical dietitian specializing in critical care nutrition & nutrition support. 
She has precepted dozens of interns, and has received accolades for her precepting work.
Sara was selected as Colorado Dietitian of the Year, and has been nominated for an Academy of Nutrition and Dietetics Excellence in Practice award.
She holds her ASHP/ASPEN Nutrition Support Certificate, a clinical nutrition certificate from Duke University, and is a CDR-certified CPEU provider.

Explore Study Guide Contents...

 

 

 

 

 

Other study guides simply provide a summary of the ASPEN Core, which isn't sufficient for studying any longer. The new CNSC exam has physician-level, pharmacy-level and nursing-level competency questions. Plus, the ASPEN Core is not representative of the CNSC exam, meaning if you rely on this resource alone (or a summary of it), you'll be left with gaps in your studying.

Part 1 | Clinical Nutrition Basics

Learn how to maximize your learning experience. A comprehensive study plan is also included, to set you up for success.

 

 

Part 2 | Vocabulary

I provide 125 terms you need to be familiar with to pass the CNSC Exam.

 

 

 

Part 3 | Pediatric Notes

This section was fully expanded & updated recently with the help of a NICU dietitian. We provide the "must know" information in a concise format, so you don't get overwhelmed with content not relevant to the exam. 

 

Part 4 | Nutrition Assessment

 Screening, medications, acid/base balance, common disease states. Plus, watch a video lecture on acid/base balance to demystify this complex topic.

Part 5 | Clinical Management

Initiation, PN access, filter sizes, micronutrients, lab testing, hang times, monitoring, complications, product shortages, drug-nutrient interactions.

Part 6 | Process Management

Product labeling, error reporting.

 

 

Part 7 | Professional Practice

Ethics, legal and regulatory standards, advanced directives, end-of-life care, experimental study design, types of validity.

 

Plus, get these new bonuses:

 

Medications Flashcards

 

Use these to memorize all the important medications you'll need to be familiar with for the exam.

What not to study

 

Don't waste time studying content you don't need to know. I've taken this exam multiple times, and tell you exactly what not to memorize in my pro tips section.

 

Free Gift!

 

Enjoy an adorable, limited edition sticker from Donut Season.

Pass the CNSC Exam with confidence

with my CNSC Exam Study Guide

 Learn relevant content 
Don't rely on old, outdated study guides. Pass the CNSC Exam on your first attempt with up-to-date information reflecting latest exam content.
Make learning fun
 Say goodbye to boring slide decks and dense textbooks and start your journey to passing the CNSC Exam with my dynamic approach, designed for the modern learner. My combination of physical, printed materials, full-color study guide, video lectures, flash cards, and a group study session will set you up for exam day success.
Learn from an educator and nutrition support expert
 Developed by a seasoned nutrition support expert, educator, and 2-time CNSC. I provide real-time advice during your study journey. You can always reach out to ask questions!
 

How does this compare to other study guides out there?

Other CNSC exam study guides rely on PDFs, case studies, and slide decks alone. My dynamic educational approach focuses on holistic, student-centered learning. I provide a physical study guide that you can take notes on and study off a computer screen, plus practice exams, flashcards, video lectures, and even a group study session for last-minute exam prep.

I have precepted dozens of interns and won awards for my precepting work, including a feature in Sodexo's magazine and Colorado Dietitian of the Year award. I have a Master's Degree in nutrition with an emphasis on education, and I taught college nutrition for five years. My approach works!

 
 

My structured study guide approach

My study guide is not simply a "Cliff Notes" version of the ASPEN Core. In fact, because the ASPEN Core is organized so differently from the CNSC Exam Content Outline, relying on this alone will likely leave gaps in your studying.

For example, the ASPEN Core has a lot of emphasis on carbohydrates and very little emphasis on ethics, whereas the CNSC Exam has a lot of emphasis on ethics and very little content on carbohydrate metabolism.

My 80-page study guide provides detailed explanations of all 51 Content Domain and Task Statements, so you don't miss a single thing.

 
“I got [another study guide], but I got frustrated because it was basically just a statement based without explanation/rationale. I need to know the reasoning and explanation in order to tie everything together...while there was a lot of content, it didn’t support my actual understanding of the processes. I really appreciate your modules, occasional videos, supplemental info, and Quizlet. It feels more like a course vs “here’s all the info, now figure it out yourself”. Also your printed binder is much appreciated!!!” - 2025 study guide student
 

Don't settle for an incomplete study guide filled with statement-based material that still requires you to do your own research, reasoning and rationale to tie it all together.

This study guide was reviewed by seven Subject Matter Experts, with deep expertise in diabetes, critical care, pediatrics, renal, bariatrics, critical care nursing, and more.

This is for you if...

 

 You feel overwhelmed by the exam and need a study guide that simplifies complex concepts and saves you time.

✅ You understand that a "Cliff notes version" of the ASPEN core won't cut it, and you want to ensure you study the entire NBNSC Content Domain & Subtask outline, so you don't miss a single area.

 You're sitting for your 5-year recertification, and want to maximize study time and ensure you pass. 

✅ You're taking your recertification, but you've been working in a niche area for the past few years, and you're worried about exam content you haven't touched in a long time.

✅ You need current, up-to-date practice exams.

✅ You don't remember a thing from your statistics class!

✅ You want to know what not to study, so you don't waste your time.

This is NOT for you if... 

  You are not yet qualified to take the CNSC Exam and need more foundational knowledge in clinical nutrition [grab this freebie to find out if you're ready to start studying for the CNSC Exam].

 
You are not yet fluent in tube feeding and parenteral nutrition (PN) calculations and can't write a tube feeding or PN order on your own [check out my Nutrition Support Skills Course].

❌ You’re looking for a free, basic resource and aren’t willing to invest in a comprehensive study guide that’s designed to save you time.

❌ You prefer a slow-paced, one-size-fits-all study approach and don’t want the flexibility to study at your own pace.

❌ You prefer traditional, dense textbooks and don't mind spending countless hours wading through irrelevant material.

❌ You're not planning to work in clinical nutrition, and don't need resources for your job.

Study Guide Bundle

$550

Includes:

  • 100 pages of targeted exam content covering all critical areas of the CNSC exam (full color, loose-leaf, 3-hole punched)

  • 400+ Quizlet flashcards 
  • Quizlet premium access ($40 value)
  • 12 practice exams
  • 15-page PN Calculation Cheat Sheet
  • 21-page Medications Quick Reference Guide
  • Acid Base Balance Module (video  lecture + quick reference guide cards + practice exam)
  • Medicare Part B Updates Module (video + practice exam)
  • Fluid and Electrolyte Balance Module (3 video lectures covering everything from types of IV fluids to water balance to hyper and hyponatremia)
  • Structured study plan
  • Zoom study session with me and other students right before the exam
  • Free sticker from Donut Season
  • NEW access to my digital community on Kajabi with step-by-step study guidance, Q&A with me, and video Meetups where we review exam content together
Access Until You Pass! You have guaranteed access to digital CNSC Exam Study Guide materials (course, videos, practice exams, flashcards) until you pass the CNSC exam. So, if you're not ready to schedule your exam yet, no sweat. 
Buy Now Save 10% and earn 23.5 CPEs by bundling with my Nutrition Support Skills Course

Study Guide Basic

$450

 Includes:

  • 100 pages of targeted exam content covering all critical areas of the CNSC exam (full color, loose-leaf, 3-hole punched)

 

 

 

 

 

 

 

 

 

 

 

 

Note: This offer does not include access my signature resources (Acid/Base Balance cards, Medications Quick Reference Guide, PN Calculation Cheat Sheet), or access to digital content (practice exams, flashcards, video lectures). For access to these items, purchase the bundle.

Buy Now