How do a DIY kit and professional testing compare?
| Question | DIY kit | Professional service |
|---|---|---|
| Who handles setup? | You follow the device and laboratory instructions. | Ask the provider who places and retrieves equipment. |
| Who documents conditions? | You record placement, timing and disruptions. | Confirm the service’s records and reporting scope. |
| What does the price include? | Check laboratory processing and shipping. | Check travel, devices, retrieval and reporting. |
| What about a home sale? | Confirm the transaction’s testing requirements first. | Discuss protocol, access and delivery deadlines. |
Neither column removes the need to follow instructions. A professionally placed device can still be disturbed, and a kit with incomplete paperwork can leave important questions unanswered. CDC recognizes both approaches and recommends a qualified tester when buying or selling.
When should I choose a short-term or long-term test?
CDC describes short-term tests as lasting 2–90 days and long-term tests as lasting more than 90 days. Longer measurements better represent conditions over time. Read the CDC testing guidance alongside the instructions for the particular device.
Separate exposure time from the time needed to obtain a usable report. Shipping, laboratory processing, appointments and retrieval may matter to your deadline. If a transaction response is due soon, tell the tester before selecting a method. If you are investigating ordinary occupancy without a closing deadline, discuss whether a longer measurement answers your question better.
No calendar month guarantees the highest or lowest result in your specific St. Louis home. Keep dates, duration and operating conditions attached to each result rather than treating season alone as a verdict.
Where should the test go, and how do I prepare?
Start with the lower-level rooms and the reason for testing. A homebuyer’s intended basement use may differ from the current owner’s. Follow the professional’s protocol or the kit’s exact instructions for placement and required conditions. Do not borrow a device height or room choice from an unrelated test.
- Identify the room and record the test start and end times.
- Share preparation instructions with all occupants.
- Keep children, pets, cleaners and contractors from moving the equipment.
- Tell the tester about building work or ventilation changes.
- For a mailed kit, follow sealing, paperwork and return instructions.
The test kit placement guide helps you prepare the questions. If something interrupts the test, document it; do not conceal the disruption to obtain a result on schedule.
How much does professional testing cost?
Request a quote for the actual property and purpose. Ask how many devices or measurement areas are included, whether equipment retrieval is included, what report you receive and whether a repeat visit costs extra. An advertised device price and a complete testing service are different scopes.
For a kit, check whether the purchase includes laboratory analysis, postage and any time-sensitive return arrangements. Compare total cost and responsibilities against the result you need. Air Sense can confirm its current scope and price when you supply the address and deadline; this page does not promise that every home needs the same setup.
What should I do after a high result?
Keep the full report and review the test method and conditions with a qualified professional. Ask whether follow-up measurement is appropriate and how the result informs a mitigation decision. The radon levels guide explains the units and decision questions.
If a proposal is needed, provide the report and foundation information. Have the proposal identify the intended work and the post-installation verification plan. Do not conclude that a new fan, a closed sump or an open window establishes a lasting indoor result. Keep the later report with the original so future decisions use the documented history.
What should I ask a St. Louis testing provider?
Ask who performs the test, what current qualifications apply, which method fits the purpose, how conditions are documented and when the report will arrive. Request an explanation of any exclusions before booking. A report you can share with a buyer, contractor or adviser should identify the property and explain what was measured.
Air Sense Environmental operates this service site and provides the services described here. The original installation photographs are examples of Air Sense work, not evidence of your home’s radon concentration. See the professional radon testing overview or call 314-664-9807 with the address, reason for testing and deadline. Confirm the complete schedule, including reporting, for your booking.
Questions before you book
Is a kit automatically less accurate than a professional test?
Do not judge reliability from who purchased the device alone. Method, correct use, conditions and quality controls matter. Ask which approach fits the decision you need to make.
Can a consumer monitor replace the requested transaction report?
Confirm the transaction’s requirements with the relevant parties and tester. A monitor display and a documented transaction test are not automatically interchangeable.
What if I placed the kit incorrectly?
Record what happened and contact the laboratory or testing professional. Ask whether the sample can be interpreted or a new measurement is needed.