Return checklist · source-linked
How to Mail a Radon Test Kit
Close, label, document, and return a passive radon test kit on time so the laboratory receives the information needed to analyze it.
Direct answer
Stop the test at the planned time, seal the device exactly as instructed, complete every required field, and send it promptly to the named laboratory using the required packaging and shipping method. Keep the device ID and shipping record.
Reviewed September 5, 2026. United States federal guidance. Device instructions and applicable state requirements take precedence.
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Reviewed September 5, 2026 · maintained by RadonVerdict.
Record the stop time before packing
The laboratory needs an exposure period, not an estimate such as 'about three days.' Record the exact stop date and time before sealing or deactivating the sampler.
Check the calculated hours against the device's permitted window. Do not extend a finished test while searching for shipping materials unless the instructions explicitly allow it.
Use the supplied closure and packaging
Passive devices must be closed or resealed according to their own design. Use the cap, pouch, adhesive, mailer, or activation process specified for that kit.
Do not substitute household packaging when it blocks required labeling or conflicts with laboratory instructions. Contact the lab if a supplied part is lost or damaged.
Complete the chain of basic facts
Typical required fields include device number, location, start and stop times, contact information, and test purpose. The exact form controls, so review it before the device leaves the room.
Keep a photograph or copy of the completed form without exposing private information publicly. This helps resolve a missing or mismatched laboratory record.
Treat laboratory arrival as part of the test
CDC instructs users to follow the package directions for sending the completed device. Some technologies have prompt-return or receipt deadlines because delay affects analysis.
Use tracking when appropriate and keep the receipt. If delivery is delayed beyond the stated window, ask the laboratory whether it can still issue a report before relying on the result.
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Open the full test plannerCommon questions
Quick answers
How soon should I mail a radon test kit?
Promptly, within the device and laboratory instructions. Some devices have time-sensitive analysis requirements.
Can I use regular mail?
Use the method stated by the kit or laboratory. Consider tracking when a deadline or transaction depends on the result.
What if my kit arrives late?
Contact the laboratory with the device ID and dates. Do not assume the sample remains analyzable or automatically discard it without their instruction.
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