Does Your Research Qualify for Exempt Determination Under 45 CFR 46.104(d)?

Not every human subjects study needs full-board, or even expedited, IRB review. Some research is low-risk enough to qualify for an exempt determination under the Common Rule, which is a faster, lighter process. The important thing to know: you can't declare your own study exempt. An IRB still has to review it and confirm that it fits one of the recognized categories. This post covers what those categories are, how to tell if your study might qualify, and how Tempus IRB handles exempt determinations.

What is an exempt determination?

Under 45 CFR 46.104(d), certain categories of human subjects research are "exempt" from the full requirements of the Common Rule. The word is a little misleading — your study still gets reviewed, and ethical standards still apply. The difference is that the risks are low enough to warrant a simpler process. The IRB reviews your materials, confirms you fit one of the exempt categories, and issues a formal determination letter. That letter is what journals, partners, and funders are looking for.

The eight exempt categories

The regulation lists eight categories. The first four are the ones most researchers encounter:

• Category 1 -- Educational settings. Research in established educational settings that involves normal educational practices, like comparing teaching methods or evaluating curricula.

• Category 2 -- Surveys, interviews, and observation. Research limited to surveys, interviews, educational tests, or observing public behavior, where participants can't be identified from the data (or if they can, disclosure wouldn't put them at risk). This is by far the most common exempt category.

• Category 3 -- Benign behavioral interventions. Brief, harmless tasks (solving puzzles, watching a video) combined with data collection, where data is recorded without identifiers or disclosure poses no real risk.

• Category 4 -- Secondary use of existing data. Research using data or biospecimens that were already collected, provided they're publicly available or recorded so subjects can't be identified.

• Categories 5–8 cover public benefit programs, food quality evaluations, broad-consent biospecimen studies, and federally-approved secondary research. They come up less often but are worth checking if your study touches on any of those areas.

Full regulatory text is at 45 CFR 46.104(d) on eCFR.

Does your study qualify?

Worth asking yourself a few things before you submit:

1. Are you doing anything beyond surveys, interviews, or low-risk tasks? Administering a drug, testing a device on someone, drawing blood: any of that puts you outside exempt territory.

2. Can participants be identified from your data? If yes, and if disclosure could cause harm (legal, financial, reputational), exemption likely doesn't apply.

3. Are vulnerable populations involved? Children, prisoners, and other vulnerable groups have additional restrictions that can limit or rule out exempt status depending on the category.

4. Is this an FDA-regulated clinical investigation? The exempt categories under 45 CFR 46 don't apply to FDA-regulated research (21 CFR 50 and 21 CFR 56). If your study involves an FDA-regulated product, you'll need a different review pathway.

If your research is surveys, secondary data analysis, educational testing, or observational work with minimal risk, there's a reasonable chance it qualifies. But only an IRB can make that official.

Exempt determinations at Tempus IRB

Tempus IRB reviews exempt determinations for a flat fee of $1,300. You submit your study materials, we assess whether it meets one of the exempt categories under 45 CFR 46.104(d), and if it does, you get a formal determination letter that satisfies journals, institutions, and funders.

We also move very, very quickly. Bernardo Cordovez, CEO of Kernis Health, put it this way:

"We submitted our IRB exemption request and received a detailed formal determination letter from Tempus IRB within five hours. Exceptional responsiveness and professionalism, I recommend them without reservation."

That's typical for us. Most protocols across all review types get their decision letter within a day of submission. All our fees are flat rates, posted on our pricing page, so you know exactly what you're paying before you submit.

Next steps

Not sure if your study qualifies? We're happy to do a quick gut check. Email us with us or sign up to submit directly.

This post is for informational purposes only and does not constitute legal advice.