Professional radon testing uses EPA-approved protocols with certified equipment strategically placed throughout your building for representative sampling. Short-term tests typically run 2-7 days, while long-term testing may extend 3-12 months for more comprehensive data. Results are usually available within 24-48 hours after equipment retrieval. The testing process is non-disruptive to normal operations, and professional placement ensures accurate measurements that account for seasonal variations and building-specific factors. Quality control measures guarantee reliable data that meets regulatory requirements and provides actionable recommendations for next steps.