Nationally Approved Courses Radon 101: Approved Radon Measurement Courses for NRSB and NRPP Certification Radon 101 & 401 Combo Class $645.00 Add to cart Radon 101: Online Measurement Course + Exam Prep + LIVE Exam Prep via Zoom $395.00 Add to cart Radon 101: Online Measurement Course + Online Exam Prep $250.00 Add to cart Upgrade to LIVE Measurement Exam Prep via Zoom $145.00 Add to cart Radon 401: Approved Radon Mitigation Courses for NRPP Certification Radon 401: Mitigation Specialist Course + Online Exam Prep $395.00 Add to cart Radon 401: Mitigation Specialist Course + Online Exam Prep + LIVE Exam Prep $495.00 Add to cart Upgrade to LIVE Mitigation Exam Prep via Zoom $99.00 Add to cart Continuing Education: NRPP Only Radon 300: Quality Assurance Planning Course $160.00 Add to cart Exam Prep Upgrade to LIVE Mitigation Exam Prep via Zoom $99.00 Add to cart