What level is considered safe?

The EPA recommends mitigation at 4.0 pCi/L or above and says reduction is worth considering between 2 and 4. No level is truly zero-risk.

Do I have to keep windows closed?

Yes. Closed-house conditions for twelve hours before and throughout the test are required for a valid result.

What if my level is high?

Mitigation is straightforward — typically a sub-slab depressurization system. We explain the options and what results to expect after installation.

Radon Testing

Radon Testing for Homes, Schools & Commercial Buildings

Radon is an odorless radioactive gas that seeps up from soil and bedrock — and the second leading cause of lung cancer in the United States. ABBN places calibrated detectors, returns certified lab results, and tells you plainly whether mitigation is warranted.

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Request radon testing

Tell us about the property and the concern. We confirm an inspection time — usually within 24 hours.

Licensed & Certified Accredited Lab Analysis Testing + Abatement Under One Roof 20+ Years Experience

What radon testing involves

Testing means placing measurement devices in the lowest livable level of the building under closed-house conditions, then analyzing them at a certified laboratory. Short-term tests run two to seven days and are what real-estate transactions rely on; long-term tests run ninety days or more and better reflect year-round exposure. Results come back in picocuries per liter (pCi/L). The EPA action level is 4.0 pCi/L, and mitigation is worth considering between 2 and 4.

Signs you need radon testing

Buying or selling a home — most contracts allow a radon contingency
Finished basement or below-grade bedroom, office or playroom
A neighboring property that tested above 4.0 pCi/L
Never tested, or last tested more than two years ago
New foundation cracks, a sump pit, or a recent basement renovation
School, daycare or commercial building with occupied lower levels

Radon measurement device placed in a basement during testing

How our radon testing works

1
Placement of calibrated detectors under closed-house conditions.
2
Timed retrieval — 48 hours to 7 days for short-term testing.
3
Certified laboratory analysis with a written pCi/L report.
4
Plain-language interpretation and mitigation guidance if levels warrant it.

Real-estate timelines and school testing

Radon contingencies are short, so we schedule placement fast and return lab results in days, not weeks — in a format attorneys and lenders accept without follow-up. For schools and institutional buildings we test room-by-room across occupied lower levels and provide a consolidated report suitable for board review.

See our full process