Exempt IRB Review
Exempt review is the fastest IRB pathway for minimal-risk research that fits one of the eight exempt categories defined under 45 CFR 46.104.
Typical approval time: 1–2 weeks
"Exempt" does not mean your study is exempt from IRB review. It means your study is exempt from the full set of federal requirements because it falls into a narrow set of low-risk categories. You still need an IRB determination before you can collect data.
Under the revised Common Rule, 45 CFR 46.104 defines eight exempt categories. Most student survey and interview research with de-identified data lands here.
When exempt review applies
Your study may qualify for exempt review if it involves minimal risk, uses straightforward methods, and fits cleanly into one of the eight categories below. "Minimal risk" under 45 CFR 46.102(j) means the probability and magnitude of harm are no greater than those ordinarily encountered in daily life.
The eight exempt categories under 45 CFR 46.104
Category 1 — Normal educational practices
Research conducted in established educational settings involving normal educational practices (classroom management strategies, standard curricula comparisons) that are not likely to adversely impact learning or instructor assessments.
Category 2 — Surveys, interviews, educational tests, and public observation
Research using surveys, interviews, educational tests, or observation of public behavior — when responses are recorded anonymously, or when any disclosure would not reasonably place subjects at risk.
Category 3 — Benign behavioral interventions with adults
Brief, harmless behavioral interventions (e.g., solving puzzles, playing an online game) with adult participants who prospectively agree, where data collection is limited to verbal/written responses or audio/video recording.
Category 4 — Secondary research with identifiable data
Secondary analysis of identifiable private information or biospecimens, when the data are publicly available, recorded without identifiers, regulated under HIPAA, or collected by a federal agency for non-research purposes.
Category 5 — Federal public benefit/service program research
Research and demonstration projects conducted or supported by a federal department and designed to study public benefit or service programs.
Category 6 — Taste and food quality evaluation
Taste and food quality evaluation and consumer acceptance studies using wholesome foods without additives, or with additives at or below FDA-approved levels.
Category 7 — Storage or maintenance of data for secondary use
Storage or maintenance of identifiable private information or biospecimens for potential secondary research use, with broad consent obtained. Requires limited IRB review.
Category 8 — Secondary research use with broad consent
Secondary research using identifiable private information or biospecimens for which broad consent was previously obtained. Requires limited IRB review.
Typical timeline
Most exempt determinations clear in 1–2 weeks. Delays usually come from missing instruments, unsigned supervisor forms, or a study that actually belongs in expedited review.
Common examples
- Anonymous online survey of graduate students about study habits
- Classroom observation comparing two established teaching methods
- Secondary analysis of a de-identified public CDC dataset
- Focus groups with adult professionals on workplace training (no identifiers linked to responses)
- Brief reaction-time task completed by consenting adults online
Eligibility checklist
- Study involves no more than minimal risk
- Fits at least one of the eight categories in 45 CFR 46.104
- Does not involve prisoners (Subpart C excludes most exempt categories)
- If children are involved, only Categories 1, 4, 5, 6, 7, and 8 are available (Category 2 is limited; Category 3 is excluded)
- No deception beyond what participants prospectively agree to
- No FDA-regulated products under study
What to submit
- Protocol summary (aims, design, population, procedures)
- All instruments (survey items, interview guide, observation sheet)
- Recruitment materials (emails, flyers, social-media posts)
- Information sheet or consent document, even when signed consent is waived
- Data management plan, especially for Categories 4, 7, and 8
Only the IRB may determine exempt status
You cannot self-certify exemption under 45 CFR 46.104. Federal regulations and institutional policy require an IRB official to make and document the exempt determination before data collection begins.
Common mistakes
- Collecting identifiers "just in case." Once you collect names, emails, or IP addresses tied to responses, Category 2 may no longer apply.
- Interviewing on sensitive topics. Illegal behavior, mental health history, or immigration status can push a study out of exempt and into expedited.
- Adding children without revisiting the category. Exempt Category 3 is not available for minors at all.
- Starting data collection before the determination letter. Data collected before IRB approval cannot be used, even retroactively.
If you are unsure whether your study fits, read how to write your IRB protocol and draft the document before requesting a determination. Reviewers decide based on what you write, not what you intend.