The CRNI is the infusion nursing credential, awarded by the Infusion Nurses Certification Corporation.
Eligibility
A current, active, unrestricted registered nurse licence in the United States, and a minimum of 1,600 hours of experience in infusion therapy as a registered nurse within the past two years.
The hours do not have to be direct bedside care. Experience in nursing education, administration, research, or clinical practice counts, provided it is within the infusion specialty. That is unusually broad among nursing certifications and makes the credential accessible to vascular access team leads, educators, and clinical specialists whose hours are not all at a patient's arm.
Renewal
The credential runs on a three-year cycle.
Recertification requires a current, active, unrestricted registered nurse licence and a minimum of 1,000 hours of infusion therapy experience as a registered nurse within the last three years, plus either re-examination or 40 recertification units of continuing education during the cycle.
The recurring practice-hours requirement is the point. This is a credential that attests to current practice, and it lapses for nurses who move out of infusion work.
The standards behind it
The specialty's professional society publishes infusion therapy standards of practice, which function as the reference for institutional policy and are cited in litigation over line-related injury. They cover site selection, device choice, dressing and connector practice, flushing, dwell times, and complication management.
Certification is, in effect, an examination on those standards. That is why it carries weight in a specialty where practice variation causes measurable harm.
What it is worth
Vascular access teams. These are the roles where the credential is most often preferred or required, and the work — device selection, ultrasound-guided placement, peripherally inserted central catheters, line maintenance — is what the examination covers. See infusion and vascular access nursing.
Home and ambulatory infusion, a fast-growing employment area where nurses work with much less immediate support and where demonstrable expertise matters more. See home health nursing and ambulatory care nursing.
Infection prevention. Central line-associated bloodstream infection is publicly reported and carries payment penalties, and a certified access team is part of how organizations respond. See infection prevention nursing.
A related credential
A separate board certification in vascular access exists and is open to several disciplines rather than to nurses alone. It is common among members of dedicated access teams, and holding both is not unusual.
Oncology nurses administering chemotherapy work under a different structure again, where a course-based certificate gates practice. See OCN and the oncology credentials.
Related
- Infusion and vascular access nursing
- Oncology nursing
- Infection prevention nursing
- Nursing certifications
Sources
- CRNI Certification: Frequently Asked Questions — Infusion Nurses Society, on eligibility hours and what experience counts. Accessed September 9, 2026.
- CRNI Recertification — Infusion Nurses Society, on the three-year cycle, the 1,000-hour requirement, and recertification units. Accessed September 9, 2026.