Long-Term Radon Testing

The most accurate way to determine your annual average radon exposure

Most Accurate Annual Average

Long-term radon testing provides the most accurate assessment of your home's annual average radon levels. Using alpha track detectors placed for 90+ days, this method accounts for seasonal variations and daily fluctuations in radon concentrations.

90+ day testing period
Alpha track detector technology
Accounts for seasonal variations
Most accurate annual average
Lab-analyzed results

Why Choose Long-Term Testing?

Most Accurate Results

Radon levels fluctuate daily and seasonally. Long-term testing captures these variations, providing a true picture of your annual exposure - the measurement that matters most for health risk assessment.

EPA Recommended

The EPA recommends long-term testing as the most accurate way to determine if your home needs mitigation. It's the gold standard for occupied homes not involved in real estate transactions.

Better Health Decisions

Since health risks are based on long-term exposure, knowing your annual average helps you make better-informed decisions about the need for mitigation.

Short-Term vs. Long-Term Testing

Feature	Short-Term Testing	Long-Term Testing
Duration	48 hours	90+ days
Best For	Real estate transactions, quick assessments	Occupied homes, health risk assessment
Accuracy	Good for immediate levels	Most accurate annual average
Cost	$150	$75
Technology	Continuous radon monitor	Alpha track detector
Results	Immediate	10-14 days after lab receipt
Home Conditions	Closed-home required	Normal living conditions

Our Testing Process

Professional Placement

Our certified technicians place alpha track detectors in your home's lowest livable area, following EPA protocols for optimal placement.

Normal Living Conditions

Unlike short-term testing, you can maintain normal living conditions throughout the test period. Open windows as usual, use fans - live normally!

90+ Day Collection

The detector remains in place for at least 90 days, silently collecting data about radon levels in your home through all weather conditions.

Lab Analysis

After collection, the detector is sent to a certified laboratory for analysis. You'll receive detailed results within 10-14 days of lab receipt.

Frequently Asked Questions

Q: Why is long-term testing more accurate?

A: Radon levels can vary significantly from day to day and season to season. Long-term testing captures these variations, providing a true annual average that better represents your actual exposure.

Q: Can I move the detector during testing?

A: No, the detector should remain in its original location throughout the test period. Moving it will invalidate the results.

Q: What's the difference in detectors used?

A: Long-term tests use alpha track detectors - small plastic devices that record damage tracks from alpha particles. Short-term tests use electronic continuous monitors that measure radon hourly.

Q: Should I do both types of testing?

A: It depends on your situation. For home sales, short-term is usually required. For your family's health assessment, long-term provides the best data. Some homeowners do short-term first, then follow up with long-term if levels are borderline.

Get the Most Accurate Radon Assessment

Long-term testing provides the best data for making health decisions

$75

Professional 90+ Day Radon Test

Schedule Your Test

Call us at (319) 431-3445 or email Deanna@iaradon.com

NRPP ID: 114561-RMP | Iowa State Certification #RNTST10229