Updated July 2026 · 8 min read

CRNA School Prerequisites: Complete Checklist for ICU Nurses

Before you write your personal statement or request letters of recommendation, your base qualifications need to be airtight. CRNA programs receive far more qualified applications than they have seats, and a missing prerequisite disqualifies you automatically. This checklist covers every category — with the nuances that program websites often leave out.

1. Degree Requirements

A Bachelor of Science in Nursing (BSN) is required by virtually every accredited CRNA program. An Associate Degree in Nursing (ADN) is not sufficient on its own — if you entered nursing via ADN, you must complete an RN-to-BSN program before applying. The BSN must be from a regionally accredited institution.

Some programs also accept a bachelor's degree in a non-nursing field if combined with a valid RN license, but this is relatively rare. When in doubt, contact the admissions coordinator directly and get the answer in writing.

2. RN Licensure

You must hold an active, unencumbered RN license in the state where you're employed. "Unencumbered" means no disciplinary actions, restrictions, or pending investigations. If your license has ever had issues, disclose them proactively and have a written explanation ready. Programs will verify your license status and any history will surface.

3. ICU Experience Requirements

This is where programs differ most significantly. The universal minimum is at least 1 year of full-time experience in a critical care (ICU) setting. However:

Step-down units, progressive care units (PCUs), and emergency departments generally do not count as ICU experience for CRNA school purposes, even if they feel critical care–adjacent. MICU, SICU, CVICU, CTICU, NCCU (neuro), and burn ICUs typically qualify.

4. GPA Requirements

Most programs want a minimum cumulative GPA of 3.0, with 3.2 to 3.5 being competitive. Your science GPA — specifically in anatomy, physiology, chemistry, microbiology, and pathophysiology — is scrutinized separately at many programs. A 3.8 cumulative GPA with Cs in chemistry is a problem. A 3.1 cumulative GPA with As in all science courses can be overcome with explanation.

If your undergraduate science GPA is weak, take upper-division science courses at a local university or community college. Completing Organic Chemistry, Biochemistry, or Advanced Physiology with an A after nursing school demonstrates academic capability in a way that admissions committees respect.

5. Science Course Requirements

Beyond GPA, some programs require specific science courses completed with a minimum grade (often B or better). Common requirements:

• Chemistry (general and/or organic) — usually within 10 years
• Anatomy and Physiology (with lab) — some require this be retaken if older than 5–7 years
• Microbiology
• Statistics — increasingly required; online courses from accredited universities are accepted
• Pathophysiology — usually covered in BSN program
• Pharmacology — usually covered in BSN program

The "within X years" rule for science courses is real. If your A&P is from 2015, some programs will require you to retake it. Check each program's currency requirements carefully.

6. Standardized Test Requirements

The GRE is required by many but not all programs. Some programs have become test-optional post-pandemic and haven't reversed course. A small number of programs accept the MCAT. If required, most programs want a minimum combined V+Q score around 290–300, with 305+ being competitive. See our full breakdown: GRE vs MCAT for CRNA school.

7. Certifications

BLS and ACLS are universal requirements — every program requires both, current and not expired. Many programs also require PALS (Pediatric Advanced Life Support). The CCRN (critical care registered nurse certification) is not universally required but is strongly preferred by competitive programs and can differentiate an application. See our CCRN exam tips and study guide.

8. Shadowing / Clinical Observation

Many programs don't formally require shadowing but they ask about it in interviews and personal statements. Observing CRNAs in the OR, procedure suite, or labor and delivery — with documentation — demonstrates genuine exposure to the role you're seeking. Aim for at least 8 to 16 hours of documented observation. This also gives you material for your personal statement and interview answers.

9. Letters of Recommendation

Typically 2 to 3 letters are required. At least one should come from a CRNA or anesthesiologist who has observed your clinical practice. See our complete guide on how to get strong LORs.

10. Complete Prerequisites Checklist

Related: Application timeline · Interview Q&A · CVICU vs MICU · CCRN exam tips