ARRT Certification: What It Is and How It Works

ARRT certification is a national, non-governmental credential from the American Registry of Radiologic Technologists that confirms a radiologic technologist has met defined standards in education, ethics, and examination for a specific imaging discipline. It works in two stages: a technologist first earns primary certification by completing an approved educational program and passing a qualifying exam, then keeps the credential active through annual registration renewal, continuing education, and continued adherence to ethics standards.

What the ARRT is and what it certifies

The ARRT is the credentialing organization for medical imaging, interventional procedures, and radiation therapy in the United States. It does not employ technologists or operate clinical sites. Instead, it defines the requirements for each credential, administers examinations, and maintains a registry of technologists who are certified and currently registered. A credential from the ARRT signals to employers, staffing platforms, and state agencies that a technologist has met a consistent national standard for a named discipline such as radiography, nuclear medicine technology, radiation therapy, or sonography.

Primary certification: education and the qualifying exam

Primary certification is the entry point into the profession. To qualify, a candidate completes an educational program that the ARRT recognizes, which combines classroom instruction with supervised clinical experience and is commonly delivered as an associate degree. The candidate must also demonstrate the clinical competencies the ARRT requires for the discipline, meet the ethics requirement, and pass the certification examination for that discipline. Once every requirement is satisfied, the technologist earns the primary credential and may use the corresponding professional designation.

Post-primary and modality certifications

After earning a primary credential, a technologist can pursue post-primary certification to add a specialized modality. These pathways cover areas such as computed tomography, magnetic resonance imaging, mammography, bone densitometry, and interventional radiography, among others. Post-primary certification generally requires an existing primary credential in good standing, documented clinical experience in the new modality, and a passing score on that modality's examination. This structure lets a technologist build a stack of credentials across a career rather than starting over for each new area of practice.

The certification examination

The certification examination is a computer-based, multiple-choice test delivered at approved testing centers. It is designed to assess the knowledge and cognitive skills needed to practice safely in the discipline, including patient care, radiation safety, image production, and imaging procedures. Scores are reported on a scaled basis, and a candidate must meet the established passing standard to earn the credential. Candidates who do not pass may retest, subject to the ARRT rules on the number of attempts and the required waiting period.

The ethics requirement

Ethics is a distinct requirement rather than an afterthought. Every candidate must comply with the ARRT Standards of Ethics, which include a Code of Ethics that describes expected professional conduct and Rules of Ethics that define specific violations. As part of applying for certification, candidates report criminal history and any prior disciplinary or honor-code matters, and the ARRT reviews these through a formal ethics process. The obligation continues after certification, because a technologist must remain in compliance to keep the credential in good standing.

Registration, continuing education, and the CQR

Earning a credential is the beginning rather than the end. Certification is the initial award, while registration is the annual renewal that keeps it active. To renew, a technologist pays the registration fee, attests to continued ethics compliance, and completes continuing education within each cycle. The ARRT organizes continuing education around a two-year period and requires a set number of credits before renewal. Separately, the Continuing Qualifications Requirements, known as CQR, apply to certain credentials on a ten-year cycle. CQR uses a structured self-assessment to identify knowledge gaps, after which the technologist completes targeted continuing education to address them.

How ARRT certification relates to state licensure

ARRT certification and a state license are related but separate. ARRT certification is a national credential issued by a private organization, while a license is issued by a state government and grants the legal authority to practice within that state. Many states require a license to work as a radiologic technologist and rely on ARRT certification, or on the ARRT examination, as the basis for issuing one. Some states set additional requirements, and a few do not license the profession at all. A technologist who works across state lines therefore needs to hold the credential the ARRT provides and to satisfy each state's own licensing rules.

Why current ARRT certification matters for per diem shifts

For per diem and PRN imaging work, current ARRT registration is a practical gate rather than a formality. Facilities that post short-notice shifts need confidence that whoever arrives can work safely and document correctly, so they verify that a technologist's credential is active and in good standing before a shift is confirmed. A lapsed registration, an unmet continuing education cycle, or an unresolved ethics matter can pause eligibility. On a staffing platform such as WhiteBadge, credentials including ARRT registration are checked up front, so a technologist only sees shifts they already qualify for and a facility knows every applicant meets the standard. Keeping certification current keeps the widest range of shifts open.