- Infusion Therapies is the largest domain at 38% and 46 scored items - prioritize it first.
- The exam is 140 four-option MCQs (120 scored, 20 pretest) in 2 hours 30 minutes.
- Eligibility requires an active RN license plus 1,600 infusion-therapy hours within the prior 2 years.
- Early-bird fees run $335 (INS member) to $475 (nonmember); late fees climb to $435/$575.
Quick Facts Snapshot
Keep this section open on a second tab the week before your test date. It condenses everything the CRNI Certification credential involves into numbers you can memorize in one sitting. For narrative context on any of these figures, the CRNI Study Guide 2026: How to Pass on Your First Attempt walks through how they fit into a full prep plan.
| Item | Detail |
|---|---|
| Administering body | Infusion Nurses Certification Corporation (INCC), independently governed from INS |
| Testing windows | March and September, via PSI computer-based testing |
| Total items | 140 four-option multiple choice (120 scored, 20 unscored pretest) |
| Time allowed | 2 hours 30 minutes |
| Scoring method | Angoff-set cut score, maintained across forms via pre-equating |
| Score report | Pass/fail, plus raw scores by domain |
| 2025 pass rate | 66% (official) |
| Eligibility hours | 1,600 infusion therapy hours as an RN within the prior 2 years |
| Certification validity | 3 years |
The Three Domains at a Glance
Every CRNI question maps to one of three content areas. Weighting drives how you should spend study hours, not alphabetical order or personal comfort. A deeper walkthrough of each domain's subtopics lives in the CRNI Exam Domains 2026: Complete Guide to All 3 Content Areas, but this cheat sheet gives you the compressed version.
Domain 1: Principles of Practice (29%)
Covers the professional, legal, and quality-management foundation of infusion nursing - the "why" and "how it's regulated" behind every clinical action.
- Standards of practice, scope of practice, and regulatory/legal considerations
- Infection prevention and control principles
- Quality improvement, documentation, and risk management
- Patient education and informed consent processes
Domain 2: Access Devices (33%)
Focuses on selecting, inserting, maintaining, and troubleshooting the full range of vascular and non-vascular access devices.
- Peripheral IV catheters, midlines, PICCs, and central venous access devices
- Implanted ports and non-vascular access (intraspinal, intraosseous, subcutaneous)
- Site selection, insertion technique, and confirmation of placement
- Device-related complications and their management
Domain 3: Infusion Therapies (38%)
The largest domain, worth 46 scored items. It covers the medications and fluids delivered through the devices in Domain 2, along with the reactions and complications tied to each therapy type.
- Fluid and electrolyte therapy, parenteral nutrition
- Pharmacology of infused medications, including antineoplastic and biologic agents
- Blood and blood component administration
- Adverse reactions: infiltration, extravasation, phlebitis, systemic reactions
Key Takeaway
Because Infusion Therapies carries 46 of 120 scored items, treat it as your anchor domain - build your calendar around it first, then layer in Access Devices and Principles of Practice.
Must-Know Topics by Domain
Beyond the domain names, here are the specific clinical items candidates repeatedly report seeing on the exam. Use this as a checklist, not a substitute for full content review.
- Vesicant and irritant classification - knowing which agents require central access and how to respond to extravasation is tested across both Domain 2 and Domain 3.
- Flush and lock protocols - saline vs. heparin locking, and the volume/technique differences between device types.
- Catheter-to-vein ratio and tip location confirmation - chest x-ray, ECG-based tip confirmation, and appropriate imaging follow-up.
- Transfusion reaction recognition - acute hemolytic, febrile non-hemolytic, and TRALI presentations, plus immediate nursing response.
- Parenteral nutrition components - osmolarity thresholds, refeeding syndrome risk, and administration route matching.
- Infection prevention bundles - maximal sterile barrier precautions, dressing change intervals, and hand hygiene standards tied to CLABSI prevention.
- Informed consent and documentation standards - what must be documented at insertion, during therapy, and at discontinuation.
Exam Mechanics: Format, Timing, Question Style
The CRNI exam runs 140 total items - 120 scored plus 20 unscored pretest items you cannot identify during the test - in a 2 hour 30 minute window. That averages to roughly one minute per item, though scenario-based questions demand more careful reading time up front. Because you can't tell scored items from pretest items, answer every question with full effort; skipping or rushing based on a guess about item type only hurts you.
Results are reported as pass/fail, accompanied by raw scores broken out by the three content domains. This breakdown is diagnostic only - it does not change your pass/fail outcome, but if you need to retest, it tells you exactly where to focus. For a full discussion of what makes this exam challenging relative to other nursing certifications, read How Hard Is the CRNI Exam? Complete Difficulty Guide 2026.
Key Takeaway
Domain-level score reports mean a failed attempt still gives you a roadmap - retest prep should target your weakest reported domain, not a full restart.
Registration Windows and Fee Tiers
The CRNI exam is offered only twice a year - March and September - through PSI computer-based testing centers. Fees increase in three tiers as the test date approaches, so early registration is a straightforward way to save money.
| Deadline Tier | INS Member | Nonmember |
|---|---|---|
| Early-bird | $335 | $475 |
| Regular | $385 | $525 |
| Late | $435 | $575 |
Candidates testing at an international site should budget an additional $140 site fee. Because INCC is legally and financially independent from INS despite the affiliation, membership status affects your fee tier but not your eligibility or scoring. A full cost breakdown, including whether INS membership pays for itself, is available in CRNI Certification Cost 2026: Complete Pricing Breakdown. For the exact 2026 testing calendar and deadline dates, check CRNI Exam Dates 2026: Testing Windows, Deadlines & Scheduling.
Eligibility Checklist
Before you register, confirm you meet both requirements below. Neither is negotiable, and INCC verifies them during the application process.
- Active RN license: Current, unrestricted, and in good standing at the time of application and testing.
- 1,600 infusion therapy hours: Accumulated as an RN within the prior 2 years. Direct bedside care is not required - hours in infusion-related education, administration, or consulting roles can count, which opens the credential to a broader range of nursing careers than many candidates assume.
This flexibility matters because it means clinical educators, infusion pharmacy liaisons, and case managers who touch infusion therapy without doing hands-on bedside pokes can still qualify. See CRNI Requirements 2026: Eligibility, Prerequisites & How to Qualify for documentation specifics and how to calculate your hours accurately.
Recertification at a Glance
CRNI certification is valid for 3 years. To renew, you need both of the following:
- 1,000 infusion-therapy practice hours accumulated during the certification cycle.
- Either retaking and passing the exam or earning 40 CRNI Recertification Units (CRNIRUs), with at least 30 of those units coming from national INS meetings or INS Virtual Education Conferences.
Plan your continuing education around INS national and virtual events specifically - other CE sources may count toward the remaining units but cannot cover the 30-unit minimum tied to INS programming. Building a rough three-year CE tracking habit now avoids a scramble in year two.
Final-Week Review Map
If you're within seven days of your test date, don't start new material - consolidate. This is the one place a structured weekly approach makes sense for CRNI specifically, because it maps directly to domain weighting rather than generic study advice.
Infusion Therapies Consolidation
- Review pharmacology categories: antineoplastics, biologics, electrolytes, parenteral nutrition
- Drill adverse reaction recognition scenarios (infiltration vs. extravasation vs. phlebitis)
Access Devices Consolidation
- Re-map device types to appropriate therapies and vein-to-catheter ratios
- Review complication troubleshooting for PICCs, ports, and midlines
Principles of Practice Consolidation
- Review documentation, consent, and infection-control standards
- Run a full-length timed practice set to rehearse the 2.5-hour pace
Light Review + Logistics
- Skim this cheat sheet and any personal weak-topic notes only
- Confirm PSI testing center location, ID requirements, and arrival time
Throughout final review, rotate practice questions on crnipracticequestions.com so your last exposure before test day is active recall, not passive re-reading. If you haven't yet built a full multi-week plan, back up to the CRNI Study Guide 2026: How to Pass on Your First Attempt for the complete framework this final-week map is designed to close out.
FAQ
The exam has 140 four-option multiple-choice questions - 120 scored and 20 unscored pretest items - administered over 2 hours 30 minutes via PSI computer-based testing.
Infusion Therapies, since it carries the highest weight at 38% (46 scored items). Access Devices at 33% and Principles of Practice at 29% should follow in that order for most candidates.
Testing windows open in March and September each year. Registration has early-bird, regular, and late fee tiers, so registering as soon as your window opens is the cheapest option.
No. Eligibility requires 1,600 infusion therapy hours as an RN within the prior 2 years, but direct bedside care is not required - education, administration, and related infusion-focused roles can count.
Recertification every 3 years requires 1,000 infusion-therapy practice hours plus either retaking the exam or earning 40 CRNI Recertification Units, with at least 30 units from national INS meetings or INS Virtual Education Conferences.
For a broader look at whether the time and fee investment pays off across a nursing career, read Is the CRNI Certification Worth It? Complete ROI Analysis 2026, and keep practicing scenario-based questions on crnipracticequestions.com until the domain weightings above feel automatic rather than memorized.