I'm planning to sit for the CRNI exam this fall after 4 years of infusion nursing experience. I have solid clinical knowledge of vascular access, infusion therapy, and oncology drug administration but I'm less confident about the pharmacology and parenteral nutrition sections since my unit doesn't do a lot of complex PN.
I started reviewing materials 10 weeks ago, roughly 45 minutes a day on weekdays. Using a CRNI practice test last week I scored 71% overall—I was at 65% when I started, so there's improvement but I'm not sure if 71% is close enough to passing with 8 weeks left.
The pharmacology questions are where I lose the most points—specifically high-alert medication management, compatibility considerations, and the calculations for concentration adjustments. Are those topics well represented on the actual exam or are they more peripheral?
Also: I've heard the CRNI exam was updated recently. Does anyone know if the content distribution has shifted significantly from older prep materials, particularly around technology/infusion devices?
I passed CRNI last year after 5 years of IV experience. I studied for 14 weeks at about 1 hour a day and walked in with around 73% on practice sets. The exam felt about as hard as the better practice sets—not harder, not easier.
High-alert medications and compatibility are definitely well-represented—I'd say pharmacology is roughly 20–25% of the exam. With 8 weeks left and a 71% score, you're in a passable position if you push that score up 4–5 points before the real exam.
Your 6-point improvement from 65% to 71% over 10 weeks of 45 minutes/day is a good trajectory. With 8 weeks left and increasing that to 75 minutes daily, you should be able to add another 4–5 points. CRNI passing threshold is around 70–72%, so you're close but not safe yet.
The INS Infusion Nursing Standards of Practice is the gold-standard reference—if you don't have it, get it. Many questions are essentially testing whether you know what INS says to do.
The updated exam blueprint does emphasize infusion technology more than older prep materials cover. Pump programming safeguards, smart pump drug libraries, and electronic infusion device troubleshooting showed up more than I expected based on materials from 2–3 years ago. If your prep resources are older, supplement with current INS practice standards.
PN is probably only 8–10% of the exam—real but not massive. Focus more on pharmacology and technology if you have to triage.