Passed the ACRN (AIDS Certified Registered Nurse) exam last month on my first attempt with a 74%. Passing is 70% so I cleared it but I definitely felt the difficulty - this isn't an exam you can wing even with years of HIV nursing experience. The pharmacology content alone probably made up 28-30% of my exam and it goes deep. Knowing ARV classes at a surface level won't cut it.
I studied for 9 weeks using the ANAC study guide as my core resource and supplemented with the DHHS antiretroviral therapy guidelines, which are free online and more current than any textbook. I spent the first 5 weeks on content, the next 3 doing practice questions - minimum 60 a day - and the last week doing timed full-length mocks. I'd average maybe 2 hours a day during the content phase and closer to 3 hours a day during the question-heavy weeks.
The exam is 150 questions over 3 hours. Beyond pharmacology, the major content areas were: HIV transmission and prevention, opportunistic infections and their prophylaxis, psychosocial issues including stigma and mental health co-morbidities, and legal and ethical aspects of HIV care. The psychosocial content surprised me - I expected it to be lighter but it was substantive and the questions required nuanced thinking, not just recall.
One thing I wasn't prepared for: several questions on HIV in special populations - pregnancy, pediatrics, and older adults. If you've mostly worked with adult male patients, read up on those populations specifically. The perinatal transmission prevention protocols were tested in detail.
74% on the first attempt is solid. I've talked to a few nurses who've taken it and most first-timers land in the 70-76% range. The people who fail are usually the ones who underestimate the pharm depth and don't give themselves enough study time.
The DHHS guidelines are the best free resource out there for the pharm content. I printed the ARV tables and reviewed them every morning for the last 3 weeks before my exam. Knowing drug interactions within each class is as important as knowing the classes themselves.
The perinatal content is worth dedicated review time. I had 4 questions specifically about preventing vertical transmission and the current preferred ARV regimens during pregnancy. That's niche enough that it's easy to skip during prep but clearly fair game on the exam.
The psychosocial section got me too. I'd been doing clinical HIV nursing for 6 years and still found those questions challenging because they require you to apply therapeutic communication principles specifically to HIV disclosure scenarios. It's not just general psych nursing knowledge.
I almost didn't finish studying for this thing. Around week three I was convinced I wasn't retaining any of the pharmacology and seriously considered rescheduling. The ARV drug classes just weren't sticking, especially the integrase inhibitors and all the resistance mutation stuff. What finally helped me was stopping the practice questions for a day and just making a simple handwritten chart of each drug class, their mechanisms, and the main interactions I needed to know. Boring, but it worked.
Passed with a 71% so I totally feel this post. It's not a comfortable margin but a pass is a pass. If you're struggling with the pharm content I'd say don't keep hammering questions if nothing is sticking -- step back and go back to basics first. The exam felt fair once I actually knew the material, it wasn't trying to trick me, I just hadn't done the foundational work yet.
I almost didn't sit for it. Seriously, about two weeks out I was convinced I was going to fail and started looking into deferring. The pharmacology was destroying me -- integrase inhibitors, entry inhibitors, the interactions with OIs -- it felt like a completely different language even though I'd been managing HIV patients for four years. What finally helped was just grinding through rationales instead of trying to memorize everything. Like, once I understood why you can't pair certain ARVs, the rest started clicking.
Ended up passing with a 76% and honestly felt like I barely scraped through. Don't let the passing score fool you into thinking 70% is easy to hit -- this exam humbles you. If you're in that "should I even bother studying more" spiral, keep going. The people who pass aren't necessarily smarter, they just didn't quit when it got hard. That's really it.