RIDGEWELL

Home test kits and professional supplies

Know your home’s radon level. Know what to do next.

Choose a test for your home, follow the steps, and keep your lab reports together in one place.

Find my testShop kits

Already have a kit? Register it

HOW TO TEST POSTAGE PAID PREPAID RETURN Tracked, to the laboratory RIDGEWELL RADON GM-ST-0001 Illustration: kit contents
I’m testing my homeA first measurement in about a week, then a clear next step. I’m buying or sellingThe right option for your state and your closing date. I already have a resultWhat the number means and which test comes next. I test properties for workCases at trade pricing, assignment in the field, reports by client.

Find my test

Four questions. You get the kit that fits, why it fits, what it costs, and how long it takes.

Most homes start here

Ridgewell Short-Term Radon Test Kit

A first measurement in about a week. Runs 2 to 4 days.

$34Lab fee and prepaid return mailer included

  • 1 short-term charcoal test device, sealed, with serial and activation code
  • Prepaid, tracked return mailer
  • Instruction card with the placement diagram
  • Laboratory analysis and your report online, with PDF download

About 11 to 20 days from order to report.

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From kit to lab report

  1. Register the kit. Scan the code on the box. It ties the device to your address and your account.
  2. Close the house up 12 hours ahead. Place the device on the lowest level you live in, 20 inches or more off the floor.
  3. Run the test. 2 to 4 days for Short-Term; 91 days or more for Long-Term. Log the start and stop times.
  4. Mail it the day you stop. The return mailer is prepaid and tracked.
  5. Read your report. We tell you when the sample reaches the lab and the moment the report posts.

Placement guide with the diagram

  1. Delivery, standard3 days to 6 daysKits leave within one business day of your order.
  2. Closed-house preparation12 hWindows and outside doors closed 12 hours before you open the device.
  3. Measurement2 days to 4 daysThe device stays in place 2 to 4 days.
  4. Sample return by mail2 days to 5 daysPrepaid and tracked. Mail it the day you stop the test.
  5. Laboratory processing3 days to 4 daysUsually 2 business days after the lab logs the sample in.

About 11 to 20 days from order to report.

Window closed RIDGEWELL RADON GM-ST-0001 20 in or more Lowest level you live in Away from drafts, kitchens, bathrooms, and exterior wallsIllustration: placement

A report you can act on

Every report shows the laboratory’s number, its uncertainty, the test conditions you logged, and the EPA guidance for that range. What the lab measured is kept separate from what you entered.

Sample report

3.1 pCi/L

Between 2 and 4 pCi/L. The EPA suggests considering mitigation in this range. A long-term test gives the yearly average.

Analysis by an independent laboratory; method Activated charcoal adsorption, gamma spectroscopy.

Reading your result · About the laboratory

Local resources

Your state’s radon office, public kit programs, transaction rules, and where licensed professionals are listed. Checked by a person, with the date.

Keep the record

Each property in My Tests holds its registered kits, test windows, sample status, original lab reports, corrections, and follow-up tests. Share a read-only link with an inspector, buyer, or landlord; revoke it any time.

  1. Kit registeredOct 26, 2026, 19:15 UTC
  2. Test startedOct 27, 2026, 15:40 UTC
  3. Test stoppedOct 29, 2026, 15:55 UTC
  4. Sample mailedOct 29, 2026, 18:00 UTC
  5. Your sample arrived at the labNov 2, 2026, 17:12 UTC
  6. Your report is readyNext

Sample record. See a full property record.

Ridgewell Radon Pro

Cases of kits at trade pricing. Scan a kit in the field and assign it to a property and a job. Every report filed by client, shareable in one click. Net terms on approved accounts.

Open a trade accountHow it works for inspectors

Team testing orders

Buying kits for employees, tenants, or members? Order once, list the recipients, and each gets their own activation link. You see completion; results stay with the person tested unless they share them.

Team orders

Questions

Support

A person replies within one business day. Contact us

The laboratory

Analysis by an independent laboratory. Credentials and chain of custody