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The Triangle’s Experts in




Thank you for visiting Radon Testing Labs. We have been family-owned since 1988 and are very proud to be North Carolina's only firm certified in radon testing, radon mitigation, and radon analysis.

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About RTL

Reliability - Trust - Leadership

Since 1988 Radon Testing Labs, Inc. (RTL) has been synonymous with quality and service. We are the largest full-service radon company in North Carolina, offering both radon monitoring and radon remediation. RTL is owned and operated by Dr. Zygmunt C. Gromadzki, who received his Ph.D. in Nuclear Physics from the University of Virginia. He is certified by the American Board of Radiology and has spent over 20 years in the treatment of cancer patients using radiation therapy. Dr. Gromadzki is a recognized expert in radiation, radioactive materials, radiation safety, and is the author of numerous publications on these subjects. Our team boasts a collective 50+ years of radon testing, analysis, and mitigation experience.

Radon Testing Labs

Radon Testing

We have a complete range of radon testing solutions.  We perform short-term radon testing using FemtoTech Continuous Radon Monitors. We have testing kits for both short- and long-term testing options.  We can also test the water in your home for elevated levels of radon.

Radon Mitigation

We have been certified to perform radon remediation for over 25 years.This unmatched experience allows us to provide you with a variety of options regarding where and how to install your radon mitigation system.

What people are saying about us
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