Radon is a naturally occurring radioactive gas that can accumulate in homes. Long-term exposure can increase the risk of lung-related health issues. Testing is the only way to know your home’s levels.

Place your Radon Sampler in a central room on the lowest level of the building suitable for occupancy, whether finished or unfinished.

For best results, we recommend exposing your Radon Sampler between 48 and 96 hours (2 to 4 days). Samplers exposed less than 2 days or more than 7 days are invalid.

To ensure accurate results, please ship your Radon Test as soon as you record your start and stop times. Your sample must arrive at our laboratory within 10 days of the stop date to remain valid. Prompt shipment helps us maintain the integrity of your test and provide reliable results.

Once your test is received by our laboratory, results are typically emailed within 3–5 business days for standard service (estimated). If you are using an Express Radon Test kit or have selected Lab Rush service, your results are usually available the same day.

Shipping your kit to your home or office is always included at no extra cost.

Express kits include a prepaid FedEx return envelope. Simply place your return shipper inside and drop it off at any FedEx location—no additional shipping cost.

Standard kits do not include prepaid return shipping. You are responsible for returning your sample using a box or package, or by applying postage directly to the return shipper.

For more shipping information, please visit our Terms of Service page.