There are two main types of radon tests used to measure the amount of radon in a commercial building or home. These are the passive and active radon tests. These tests collect the air in a given area and either report the amount of radon detected or hold that information for a lab to determine.

The passive radon tests are used in a space between 2 and 90 days. These tests require no electricity to run and can be used on every level of the building. The EPA suggests at least one test be placed on the lowest level of the building. The kitchen, bathroom, laundry room, and hallway should not be used as the air source. Most passive tests will take between 48 and 96 hours to complete.

Passive radon tests employ the use of charcoal canisters, charcoal liquid or alpha-track detectors to measure the radon levels. The levels are collected and when the unit is finished tracking the air quality, it is sent off to a lab where the radon levels are reported. The lab report is then sent to the appropriate party.

The active radon tests works in a slightly different manner. This unit requires electricity to run. Continuous monitoring of the air in a commercial building or home allows the radon level spikes and dips to be recorded more successfully. These units can be used by the owner of the building, but are most often used by professionals testing for radon gas in the home.

When using radon tests, the homeowner or building owner should follow a few simple tips to ensure the readouts are accurate.

* All windows and doors should be kept shut while the air quality is being tested.

* Radon tests need to be located a minimum of 20 inches from the floor.

* Short term radon tests do not accurately measure radon levels during high humidity, stormy or windy conditions.

* Before the radon tests are installed, the windows and doors should be left closed for at least 12 hours.

* If radon gas is thought to be in the space, people should not use the space until the tests are complete.

Radon tests are a quick and effective way to measure the radon gas in a given space. Radon is an odorless gas that is thought to cause cancer. A non-smoker who is regularly breathing even the lowest levels of radon may have a higher chance of contracting lung cancer than someone who is not around radon gas.

If higher than normal levels of radon are detected with the radon tests, there are effective removal systems that can be installed within the home or commercial building. These removal systems employ the use of pipes running from the source of the radon to the roof to move the gas out of the space before it can concentrate to higher than healthy levels.