How to Choose a Radon and Mold Testing Company: Questions to Ask

Not all radon and mold testing providers operate the same way, and a few specific questions can help you compare options before booking.

Is the Provider Licensed for Radon Testing?

In Illinois, radon testing should be performed by an IEMA-licensed radon professional.

This isn't just a formality — licensing reflects a baseline level of training and accountability that an unlicensed provider doesn't carry.

Does the Company Also Perform Remediation or Mitigation?

As covered in a related article, a company that both tests and remediates has a built-in incentive that can complicate objectivity, even with good intentions.

An independent testing-only provider doesn't have that conflict.

What's the Actual Turnaround Time?

Ask specifically — "about a week" and "about 3 business days" are very different experiences, especially if you're working against a closing date or contingency deadline.

Is Lab Analysis Accredited?

For mold testing specifically, results are only as reliable as the lab processing the samples.

Accredited lab analysis is a meaningful quality marker, not just paperwork.

Is the Report Actually Clear?

Ask what a sample report looks like, or what's included.

A report full of unexplained technical jargon isn't as useful as one that clearly states your results, what they mean, and what (if anything) to do next.

Is Pricing Transparent Upfront?

You should be able to get a clear base price and understand what could affect it (property size, foundation type, sample count) before committing to an appointment.

Schedule a radon or mold test today with DezAir Quality Testing online at dezairqualitytesting.com.