What Is CSG Certification?

What the CSG Credential Actually Is

CSG stands for Certified Specialist in Gerontological Nutrition. It is a board certification for registered dietitians who focus their practice on older adults. The Commission on Dietetic Registration (CDR), the credentialing arm of the Academy of Nutrition and Dietetics, administers it, and CDR also describes the credential as Board Certified Specialist in Gerontological Nutrition. If you have seen the same three letters attached to other professional certifications, set those aside: this article covers only the dietetics specialty, and every figure below comes from CDR's published materials for it.

The credential is a specialist layer on top of the Registered Dietitian (RD) credential. It does not replace RD status, and you cannot hold it without maintaining RD status. What it signals is documented depth in the nutrition issues that define aging: changes in intake and appetite, chronic disease management, swallowing and texture needs, malnutrition risk, long-term care regulation, and the foodservice systems that feed older adults in institutional settings.

For a broader orientation to the terminology, see our explainers on what CSG stands for and the meaning of CSG. This guide goes further into how the credential works in practice.

Who Can Sit for It: Eligibility in Plain Terms

CDR sets two core eligibility gates, and both must be satisfied by the examination date:

• Registered Dietitian status held for at least two years. Your RD credential must be current and must have been held for a minimum of two years when you test.
• 2,000 verified hours of gerontological-nutrition specialty practice. These hours must be earned as an RD during the five years preceding your application.

Approved education or professional substitutions can cover up to 800 of those 2,000 hours. That flexibility matters for dietitians whose roles blend older-adult care with other populations, or whose advanced coursework and professional activities fall within CDR's approved categories. The practical consequence is that hours documentation is the real bottleneck for many candidates, not the exam itself. Start tracking your qualifying work early, and confirm how CDR classifies each role before you apply.

The complete application mechanics are laid out in our CSG requirements guide.

Inside the Exam: Format, Timing and Rules

The CSG examination is computer-based and consists of 150 multiple-choice questions. Each item offers four options with one best answer. Of the 150, 125 are scored and 25 are unscored pretest questions that CDR uses to evaluate future items. You will not be told which are which, so treat every question as if it counts.

What the "answer before advancing" rule means for pacing

Many candidates are used to flagging a hard question and returning later. The CSG format requires an answer to the current question before you move on, so you cannot defer difficult items. With 150 questions in three hours, you have roughly 72 seconds per item on average. A calculation question involving energy or protein estimation, for example, deserves more time than a recall question about a regulation, so build a feel for fast and slow item types before test day. Because breaks do not pause the clock, plan your hydration and energy beforehand rather than counting on a pause.

For a candid look at how this format feels to candidates, read How Hard Is the CSG Exam?

The Three Exam Domains and What They Test

CDR's Examination Content Outline for CSG (copyright 2024) organizes the exam into three official domains. The outline allocates scored items by count rather than publishing percentage weights, so the numbers below are item counts, not percentages.

Our complete guide to all three CSG content areas breaks each domain down further, and the CSG cheat sheet condenses the high-yield facts into a single review page.

Registration, Fee and Scheduling Mechanics

The process runs in two stages: CDR first approves your eligibility application, and then you schedule your appointment. The examination fee is USD $350, paid at the time you schedule. Testing is delivered through Pearson VUE test centers, which offer computer-based testing year-round, so there is no single annual exam date to build your life around.

One detail worth knowing: CDR's content outline still carries PSI branding, while the current operational source, the CDR Specialist Certification Candidate Handbook 2026-2027, identifies Pearson as the testing provider. When the two differ, follow the current handbook for testing-provider and exam-day policies, and read it in full before your appointment.

If you do not pass, retesting normally requires reauthorization and a 60-day wait. That waiting period is a practical reason to prepare thoroughly the first time rather than treating the first sitting as a trial run. For scheduling specifics, see CSG exam dates and scheduling, and for the full financial picture beyond the exam fee, see the CSG certification cost breakdown.

What the Published Results Show

CDR publishes pass/fail statistics for the credential. For January through June 2026, it reports:

• Overall: 90% passing, or 64 of 71 examinees
• First-time examinees: 87% passing, or 41 of 47
• Recertification row: reported as 96% alongside a count of 21 of 22

That last row does not reconcile: 21 of 22 is not 96% by simple division, and CDR's published page pairs the two figures as shown. We report it as published rather than quietly adjusting either number, and we recommend treating that specific row with caution until CDR clarifies it. Note also that these are small cohorts for a six-month window, so a handful of candidates moves the percentages noticeably.

How CDR decides who passes is just as important as the results. Passing is established through Angoff standard setting, a method in which subject-matter experts judge how a minimally competent candidate would perform on each item, combined with statistical equating that adjusts for differences in difficulty between exam forms. It is not a fixed percentage of candidates, and CDR does not publish a raw passing percentage. Our pages on the CSG pass rate and CSG passing score explain how to read this responsibly.

Sequencing Your Preparation Around the Blueprint

You do not need an elaborate study system. You need a plan that respects how the exam is built. Start with CDR's own reading list, References for Board Certification as a Specialist in Gerontological Nutrition (CSG) Exam (updated July 2025). It is a reference list, not a replacement for the content outline, so use it alongside the three domains rather than instead of them.

You can test yourself against realistic items on our CSG practice test, and our CSG study guide expands on resources and pacing. If you want an extra round of timed questions late in your plan, the main practice exam site is a good place to simulate exam conditions.

Where the Credential Fits in a Career

CSG makes the most sense for dietitians whose daily work centers on older adults. Typical settings include skilled nursing and long-term care facilities, assisted living, home health and hospice, geriatric clinics, senior nutrition programs and consulting practices serving aging populations. Employers in these settings value a credential that demonstrates focused competence, and the Foodservice and Food Safety domain reflects how often these roles touch dining operations as well as clinical care.

Whether the credential changes your compensation or opportunities depends on your employer, region and role, and we avoid quoting figures we cannot source. For a structured look at the question, see whether the CSG certification is worth it, our salary analysis, and our overview of CSG jobs.

Keeping It: The Five-Year Cycle

CSG certification is valid for five years. The renewal process is stricter than many credentials, so plan for it early:

1. Maintain current RD status.
2. Submit a new eligibility application that includes the applicable specialty-practice hours.
3. Pay the examination fee.
4. Pass another specialist examination.

Continuing education alone does not renew CSG. This is a notable difference from credentials that renew through accumulated CE credits, and it means your practice-hour documentation and exam readiness both matter again at the five-year mark.

Frequently Asked Questions

For a deeper look at how this credential is defined and described, our overview pages on what CSG is and the CDR specialist pathway provide additional context as you decide whether to pursue it.