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Updated May 2026

Best Radon Test Kits
Reviewed and Ranked

Expert-reviewed short-term, long-term, continuous, and water radon test kits — with current Amazon prices, star ratings, and guidance on exactly which kit fits your situation.

7 kits reviewed Amazon-verified ratings EPA-approved options included Real estate kits flagged

All 7 Kits at a Glance

Kit Type Duration Price Rating Lab Fees Real Estate OK?
First Alert RD1 Radon Gas Test Kit Short-Term 2-4 days $15-$19 ★★★★☆ 4.2 Included Single only
LABPRO Short-Term Radon Test Kit Short-Term 3-7 days $17-$20 ★★★½☆ 3.9 Included Single only
PRO-LAB Dual Real Estate Radon Test Kit Short-Term 48-96 hours $30-$35 ★★★★☆ 4.1 Included Yes
Radonova Radtrak3 Long-Term Radon Test Kit Long-Term 90 days - 1 year $27-$33 ★★★★½ 4.5 Included Single only
AccuStar Alpha Track AT-100 Long-Term Radon Test Kit Long-Term 91 days - 12 months $35-$39 ★★★½☆ 3.9 Included Single only
Airthings Corentium Home Radon Detector (Model 223) Continuous Continuous (24-hr first reading) $149-$179 ★★★★½ 4.6 Never pay No
Airthings Wave Plus Smart Radon Detector Continuous Continuous $219-$239 ★★★★☆ 4.2 Never pay No

Fastest Results — 2 to 7 Days

1
Short-Term · 2-4 days

First Alert RD1 Radon Gas Test Kit

“The gold-standard starter kit — trusted by homeowners for nearly 60 years.”

Editor's Pick
$15-$19
★★★★☆ 4.2/5
3,500+ Amazon reviews
The First Alert RD1 is the go-to radon test kit for first-time testers. Using activated charcoal technology listed under the EPA Radon Gas Measurement Proficiency Program, you simply place the canister in the lowest lived-in level of your home for 2-4 days, then mail it to the certified lab in the included prepaid envelope. Results arrive by email within 3-5 business days — no subscriptions, no apps, no fuss. A reliable choice with lab fees already baked into the price (NJ state fees excluded).
Pros
  • Lab fees included (except NJ)
  • EPA-listed and widely accepted
  • Results in 3-5 business days
  • Ideal for initial home screening
Cons
  • Single-use only
  • Not standalone for real estate
Test Duration
2-4 days
Results
3-5 business days
Lab Fees
Included ✓
Best for: First-time homeowners who want a fast, affordable initial screening.
View on Amazon
2
Short-Term · 3-7 days

LABPRO Short-Term Radon Test Kit

“EPA Certified Radon Test: Leveraging advanced technology, this radon test kit provides a concise radon assessment within days. Rely on LABPRO for prompt and precise radon detection.”

Budget Pick
$17-$20
★★★½☆ 3.9/5
342+ Amazon reviews
LAB-PRO offers a quick Radon tester designed for short-term use, our radon testing kit offers a swift overview of radon levels, making it ideal for initial home screenings.
Pros
  • Same-day lab processing on receipt
  • Flexible 3-7 day test window
  • Air Chek's own NRPP-listed lab
  • Used in 300,000+ classrooms
Cons
  • Single-use only
  • Marginally pricier than First Alert
Test Duration
3-7 days
Results
Same day as lab receipt
Lab Fees
Included ✓
Best for: Homeowners who want fast results from a trusted, high-volume radon lab.
View on Amazon
3
Short-Term · 48-96 hours

PRO-LAB Dual Real Estate Radon Test Kit

“Two detectors in one kit — meets the duplicate-testing requirement for home inspections.”

Real Estate Ready
$30-$35
★★★★☆ 4.1/5
1,200+ Amazon reviews
When you're buying or selling a home, the EPA generally recommends duplicate simultaneous testing. The PRO-LAB Dual Kit includes two activated charcoal canisters designed to run together in the same location — the format most real estate professionals and inspectors require. Lab fees for both detectors are included in the all-inclusive ASIN (B08VBPGV82). The lab is NRPP and NRSB certified, and results meet CRCPD standards accepted in all 50 states. Important: always purchase ASIN B08VBPGV82 to avoid surprise lab fees.
Pros
  • 2 detectors — satisfies duplicate-test requirement
  • Lab fees for both detectors included
  • NRPP/NRSB certified lab
  • Accepted in real estate transactions nationwide
Cons
  • Pricier than single-detector kits
  • Verify ASIN — older listing charges extra fees
Test Duration
48-96 hours
Results
3-5 business days
Lab Fees
Included ✓
Best for: Home buyers, sellers, and real estate agents who need certified duplicate testing.
View on Amazon

Deeper Accuracy — Weeks to Months of Data

1
Long-Term · 90 days - 1 year

Radonova Radtrak3 Long-Term Radon Test Kit

“The most accurate long-term kit available — trusted by the global radon science community.”

Most Accurate
$27-$33
★★★★½ 4.5/5
900+ Amazon reviews
Radonova is the world's largest radon laboratory, operating in over 50 countries, and the Radtrak3 is their flagship consumer detector. The alpha track technology measures radon exposure over 90 days to 1 full year, capturing seasonal fluctuations that short-term kits miss entirely. The kit includes the detector, registration instructions, and return postage. Once mailed back, your lab report lands in your inbox within 7-10 business days. EPA-approved. This is the kit radon professionals recommend when you need the most accurate annual average.
Pros
  • 90 days to 1 year — captures true annual average
  • Global leader in radon lab science
  • Lab analysis and return postage included
  • Alpha track minimizes false readings
Cons
  • Minimum 3 months before mailing in
  • Not suitable for real estate timelines
Test Duration
90 days - 1 year
Results
7-10 days after return
Lab Fees
Included ✓
Best for: Homeowners who want the most accurate annual average radon reading.
View on Amazon
2
Long-Term · 91 days - 12 months

AccuStar Alpha Track AT-100 Long-Term Radon Test Kit

“Rated #1 for accuracy by a leading consumer advocacy organization — the benchmark long-term kit.”

Consumer Reports #1
$35-$39
★★★½☆ 3.9/5
275+ Amazon reviews
AccuStar's Alpha Track AT-100 has long been the benchmark for long-term residential radon testing. Rated #1 by a major consumer advocacy group, it uses a patented diffusion-based track detector that filters out dust and radon progeny for cleaner counting statistics. Deploy it for 91 days to 12 months under normal living conditions — no closed-house conditions required. Results are emailed within 2 weeks of lab receipt and are also accessible via AccuStar's 24-hour toll-free number. Available in single and double packs.
Pros
  • Rated #1 accuracy by Consumer Reports
  • Hemispherical design maximizes sensitivity
  • No closed-house conditions required
  • Postage-paid return envelope included
Cons
  • Slightly pricier than Radonova Radtrak3
  • ~2-week result turnaround (slower lab)
Test Duration
91 days - 12 months
Results
~2 weeks after lab receipt
Lab Fees
Included ✓
Best for: Homeowners who want a third-party validated long-term kit with a strong accuracy track record.
View on Amazon

Always-On Protection — No Lab Fees

1
Continuous · Continuous (24-hr first reading)

Airthings Corentium Home Radon Detector (Model 223)

“The most popular digital radon detector on Amazon — no lab fees, ever.”

Best Digital Monitor
$149-$179
★★★★½ 4.6/5
10,000+ Amazon reviews
The Airthings Corentium Home is the best-selling and highest-rated digital radon detector on Amazon, with over 10,000 reviews and a 4.6-star average. It runs on 3 AAA batteries (included, ~2-year life) and displays short-term (1-day, 7-day) and long-term radon averages on a clear LCD screen — no apps, no Wi-Fi, no recurring lab fees. Third-party tested by the Canadian National Radon Program (C-NRPP) to 90% accuracy within 7 days. Portable enough to test multiple rooms. Generate a free self-inspection report from the Airthings website after 30+ days of data.
Pros
  • No lab fees — ever
  • 4.6 stars, 10,000+ reviews
  • C-NRPP tested: 90% accuracy in 7 days
  • Displays short- AND long-term averages
  • Portable — test multiple rooms
  • Free 5-year warranty with registration
Cons
  • Higher upfront cost
  • Not accepted for real estate transactions
  • No audible alarm feature
Test Duration
Continuous (24-hr first reading)
Results
Instant — on-screen display
Lab Fees
Never ✓
Best for: Homeowners who want ongoing peace of mind without paying for a new kit every year.
View on Amazon
2
Continuous · Continuous

Airthings Wave Plus Smart Radon Detector

“Radon + CO2 + VOCs + humidity in one device — the all-in-one indoor air quality monitor.”

Smart Home Pick
$219-$239
★★★★☆ 4.2/5
3,289+ Amazon reviews
For homeowners who want a complete picture of indoor air quality, the Airthings Wave Plus goes beyond radon to monitor CO2, volatile organic compounds (VOCs), humidity, temperature, and air pressure. It connects via Bluetooth to the free Airthings app for historical charts, trend analysis, and alerts. Compatible with Amazon Alexa, Google Assistant, IFTTT, and Homey. A color-coded LED ring on the front provides instant visual feedback — green means you're safe, red means it's time to ventilate. Battery powered with up to 1.5 years per set.
Pros
  • Monitors 6 air quality parameters
  • Bluetooth app with historical data and alerts
  • Works with Alexa, Google Home, IFTTT
  • Color-coded LED status ring
Cons
  • Requires smartphone and Bluetooth
  • Premium price point
  • Not accepted for real estate testing
Test Duration
Continuous
Results
Real-time via app
Lab Fees
Never ✓
Best for: Tech-forward homeowners who want full indoor air quality monitoring beyond just radon.
View on Amazon

Which Type of Radon Test Is Right for You?

S

Short-Term Kits

Fastest and most affordable. Get a snapshot result in days.

  • Best for first-time home screening or quick checks
  • Charcoal-based — place it, mail it, read results
  • Use two simultaneous kits for real estate transactions
  • Limitation: radon fluctuates seasonally — a short-term read is a snapshot
L

Long-Term Alpha Track Kits

Months of data for the most accurate annual average.

  • Best for confirming an elevated short-term result
  • Passive detector tracks alpha particles over 91+ days
  • Captures seasonal variation short-term tests miss
  • Limitation: you'll wait 3–12 months before mailing in
C

Continuous Digital Monitors

Always-on protection with no recurring lab fees.

  • Best for permanent, ongoing peace of mind
  • Readings update hourly on screen or via app
  • Reveals how activities (cooking, weather) affect levels
  • Limitation: higher upfront cost; not for real estate use
!

EPA Action Level: 4.0 pCi/L

If your radon test result is 4.0 pCi/L or higher, the EPA recommends mitigation. An estimated 1 in 15 U.S. homes exceeds this threshold. If your result is between 2–4 pCi/L, the EPA suggests you consider mitigation — especially in high-risk regions. There is no known “safe” level of radon exposure.

© 2026 RadonResources.com · Prices and star ratings reflect Amazon listings as of May 2026 and are subject to change without notice. This page contains affiliate links — RadonResources.com may earn a commission on qualifying purchases at no additional cost to you. Always follow EPA and state guidelines when testing and mitigating radon in your home.