How IRBs Determine the Appropriate Level of Review

When submitting a research protocol to an Institutional Review Board (IRB), one of the most fundamental questions researchers face is: what level of review will my study require? The answer significantly impacts your timeline, documentation requirements, and overall approach to the submission process.

Understanding how IRBs determine the appropriate level of review—exempt, expedited, or full board—is crucial for researchers planning their studies, managing timelines, and preparing compliant submissions. This comprehensive guide explains the criteria IRBs use to classify research and provides practical advice for navigating each review pathway.

The Three Levels of IRB Review

IRBs categorize research protocols into three distinct review levels based on the nature of the research and the degree of risk to participants:

  1. Exempt Review: Research that qualifies for exemption from ongoing IRB oversight
  2. Expedited Review: Minimal risk research that qualifies for review by one or more IRB members rather than the full board
  3. Full Board Review: Research requiring review and approval by the convened IRB at a scheduled meeting

Each level reflects a different degree of regulatory oversight commensurate with the potential risks to research participants.

Understanding Exempt Review

What Qualifies for Exempt Review?

Exempt review applies to research that involves minimal risk to participants and fits within specific regulatory categories defined in 45 CFR 46.104. Common categories include:

  • Educational tests, surveys, interviews, or observations of public behavior (with specific conditions)
  • Benign behavioral interventions with adult subjects
  • Secondary research using identifiable private information or biospecimens (under certain conditions)
  • Research involving collection or study of existing data, documents, or specimens

It's important to note that "exempt" doesn't mean the research is exempt from IRB review entirely—rather, it's exempt from continuing review requirements after initial approval. Many institutions conduct what's called a limited IRB review for exempt studies, particularly when privacy protections are needed.

Key Considerations for Exempt Research

Even when research appears to qualify for exemption, certain factors may prevent exempt classification:

  • Vulnerable Populations: Research involving prisoners never qualifies for exemption, and research with children has limited exempt categories
  • FDA-Regulated Products: Studies involving investigational drugs, devices, or biologics cannot be exempt
  • Identifiable Sensitive Information: Research collecting identifiable information about criminal behavior, sexual behavior, or substance abuse may not qualify
  • International Context: Studies conducted outside the United States may face additional scrutiny

Before assuming your study qualifies for exempt review, carefully review your IRB submission checklist to ensure all criteria are met.

Expedited Review: The Middle Ground

Criteria for Expedited Review

Expedited review is available for research that presents no more than minimal risk to participants and involves only procedures listed in one or more of the expedited review categories defined in 45 CFR 46.110. These categories include:

  • Collection of biological specimens by non-invasive means
  • Collection of data through non-invasive procedures routinely employed in clinical practice
  • Research on individual or group characteristics using surveys, interviews, or focus groups
  • Continuing review of research previously approved by the convened IRB
  • Minor changes to previously approved research

For researchers conducting interviews and focus groups, expedited review is often the appropriate pathway, provided the research meets minimal risk criteria.

The Minimal Risk Standard

The concept of "minimal risk" is central to determining eligibility for expedited review. The regulations define minimal risk as research where "the probability and magnitude of harm or discomfort anticipated in the research are not greater in and of themselves than those ordinarily encountered in daily life or during the performance of routine physical or psychological examinations or tests."

IRBs evaluate minimal risk by considering:

  • Physical risks to participants
  • Psychological or emotional risks
  • Social or economic risks
  • Privacy and confidentiality risks
  • Legal risks

Expedited Review Process

Under expedited review, one or more experienced IRB members review the protocol rather than the full board. This streamlined process typically offers:

  • Faster turnaround times (often 5-10 business days)
  • More flexible scheduling
  • Direct communication with the reviewing IRB member
  • Simplified amendment procedures for approved studies

To maximize your chances of fast IRB approval through the expedited pathway, ensure your submission is complete and clearly demonstrates how your study meets minimal risk criteria.

Full Board Review: When Comprehensive Oversight is Required

Research Requiring Full Board Review

Full board IRB review is required when research doesn't qualify for exempt or expedited review. This typically includes:

  • Research involving more than minimal risk to participants
  • Studies involving vulnerable populations (pregnant women, prisoners, cognitively impaired individuals)
  • Research with children that doesn't qualify for expedited review
  • FDA-regulated clinical trials testing investigational products
  • Research involving deception that requires a waiver of informed consent
  • Complex protocols requiring collective deliberation

The Full Board Review Process

Full board review involves presentation and discussion of the protocol at a convened meeting of the IRB, where a quorum of members is present. The process includes:

  1. Primary and Secondary Reviewer Assignment: Two or more IRB members receive assigned responsibility for in-depth protocol review
  2. Board Discussion: The protocol is presented and discussed by the full board
  3. Voting: A majority of members present must approve the research
  4. Expertise Requirement: At least one scientist and one non-scientist must participate in the review

Timeline Considerations

Full board review typically takes longer than expedited or exempt review because:

  • Protocols must be submitted in advance of scheduled board meetings (often 2-3 weeks)
  • Meetings occur on a fixed schedule (monthly or bimonthly at most institutions)
  • Requested modifications may require re-review at a subsequent meeting

Researchers should plan for 4-8 weeks from initial submission to final approval for full board review, though timeline expectations vary by institution.

How IRBs Make the Determination

Initial Classification Process

When you submit a protocol, IRBs follow a systematic process to determine the appropriate review level:

  1. Administrative Pre-Review: IRB staff conduct an initial assessment of the submission
  2. Risk Assessment: The IRB evaluates potential physical, psychological, social, economic, and legal risks
  3. Regulatory Category Matching: The protocol is compared against exempt and expedited categories
  4. Population Considerations: Special attention is given to vulnerable populations
  5. Regulatory Requirements: FDA-regulated research and other specific regulatory requirements are considered
  6. Final Classification: The IRB chair or designee makes the final determination

Factors That Influence Classification

Several key factors influence how IRBs classify research:

Study Population - Research with children generally requires full board review unless it qualifies for specific exempt categories - Prisoner research always requires full board review - Pregnant women, fetuses, and neonates typically require full board review - Decisionally impaired adults usually require full board review

Nature of the Intervention - Invasive procedures typically require expedited or full board review - FDA-regulated investigational products require full board review - Behavioral interventions are evaluated based on risk level

Data Sensitivity - Research collecting sensitive information about illegal activities may require enhanced review - Studies involving protected health information have specific considerations under HIPAA - Research with potential legal, social, or economic risks receives careful scrutiny

Consent Process - Standard informed consent typically supports expedited review eligibility - Requests for waivers or alterations of consent often trigger full board review - Consent process complexity influences classification decisions

Common Misclassification Scenarios

Researchers sometimes incorrectly assume their study qualifies for a particular review level. Common misclassification scenarios include:

Assuming Survey Research is Always Expedited or Exempt

While many survey studies qualify for expedited or exempt review, surveys involving: - Sensitive topics that could place participants at risk if disclosed - Vulnerable populations - Deceptive elements - Potential psychological distress

May require full board review regardless of the data collection method.

Overlooking Vulnerable Population Protections

Research that would otherwise qualify for expedited review may require full board review when it involves children, prisoners, or other vulnerable groups. For example, research with children has specific regulatory requirements that often necessitate full board oversight.

Underestimating Privacy Risks

Researchers sometimes fail to recognize that privacy and confidentiality risks can elevate a study from expedited to full board review, particularly when: - Data breaches could result in legal, social, or economic harm - Identifiable information about sensitive topics is collected - Adequate protections aren't in place

Practical Steps for Researchers

Before Submitting Your Protocol

  1. Review Regulatory Categories: Familiarize yourself with the exempt and expedited categories in the regulations
  2. Conduct a Risk Assessment: Honestly evaluate all potential risks to participants
  3. Consult IRB Resources: Many IRBs provide decision tools and guidance documents
  4. Consider Pre-Submission Consultation: Contact the IRB for guidance on classification before formal submission
  5. Prepare Complete Documentation: Regardless of anticipated review level, submit complete documentation from the start

If Your Study Receives a Different Classification Than Expected

Don't be surprised if the IRB classifies your study differently than you anticipated. If this occurs:

  1. Request an Explanation: Ask the IRB to clarify the rationale for the classification
  2. Review Your Protocol: Look for elements that may have triggered the higher review level
  3. Consider Modifications: Sometimes minor protocol changes can shift review level
  4. Accept the Determination: IRBs have expertise in classification and act conservatively to protect participants

Understanding Review Level Changes During the Study

The review level can change over the course of a study. For example:

  • A study initially receiving full board review may qualify for expedited continuing review if risks decrease
  • Protocol amendments that increase risk may elevate expedited studies to full board review
  • Changes in study population or procedures can affect classification

Special Considerations for Different Research Types

Multi-Site Studies

For multi-site clinical trials, the reviewing IRB (whether a single IRB or central IRB) makes the review level determination that typically applies across all sites. Understanding single IRB requirements is essential for multi-site research planning.

Quality Improvement vs. Research

Before determining review level, IRBs must first determine whether an activity constitutes research requiring IRB review. Understanding the distinction between quality improvement and research is crucial for proper classification.

Industry-Sponsored Trials

Commercial research, particularly FDA-regulated trials, typically requires full board review regardless of risk level due to regulatory requirements and the nature of investigational product testing.

Maximizing Efficiency Across All Review Levels

Regardless of which review level applies to your study, you can improve efficiency by:

  1. Submitting Complete Applications: Incomplete submissions cause delays at all review levels
  2. Clearly Articulating Risk-Benefit Analysis: Help reviewers understand your risk assessment
  3. Providing Comprehensive Informed Consent: Well-crafted consent documents facilitate all review types
  4. Maintaining Open Communication: Respond promptly to IRB questions and requests
  5. Following IRB Guidance: Adhere to institution-specific requirements and templates

For additional strategies, review our guide on avoiding common rejection reasons.

Conclusion

Understanding how IRBs determine the appropriate level of review is essential for efficient research planning and execution. By familiarizing yourself with the criteria for exempt, expedited, and full board review, conducting thorough risk assessments, and preparing comprehensive submissions, you can navigate the IRB process more effectively.

Remember that IRB classification decisions prioritize participant protection above all else. While researchers naturally hope for the most streamlined review pathway, the IRB's conservative approach to classification serves an important ethical function in research oversight.

Partner with Elemental IRB for Efficient, Expert Review

At Elemental IRB, we understand that navigating IRB review levels can be complex. Our experienced team provides clear guidance on review classification and works efficiently across all review pathways to move your research forward without compromising ethical standards.

Whether your study requires exempt determination, expedited review, or full board consideration, we offer:

  • Transparent communication about review level determination
  • Fast turnaround times appropriate to each review pathway
  • Expert guidance on optimizing your submission for efficient review
  • Responsive support throughout the review process

Contact Elemental IRB today to discuss your research project and learn how we can support your study with expert, efficient IRB review tailored to your specific needs.