While radon is a naturally occurring radioactive gas, swollen concentrations of radon gas in the home can be to you and your family 's health. Radon can into your home 's basement or crawl space through cracks in the foundation or walls, openings or spaces around sump pumps and drains, or construction joints or flaws. The basic Alert radon test kit is under the EPA radon gas measurement proficiency program and can be completed in as few as two to three days. in the cost is the lab fee for an EPA listed lab and a return mailer. The test results are to you within 72 hours of lab receipt, and include the recommended adjacent steps you will need to ensure the health of your household. -- Norlander What 's in the Box Charcoal activated test kit, user 's manual , and return mailer From the Manufacturer Charcoal model for first screening. Test in 2-3 days. Includes lab fee, and recommended adjacent steps. under the EPA radon gas measurement proficiency program.