Readily available in both short-term and long-lasting tracking, the tests are easy to utilize and need very little arrangement. " The test is reputable and also affordable-- it does not take brain surgery," says Costs Wehrum, an administrator at the EPA's Office of Air and Radiation. The EPA suggests doing a second radon examination if an initial temporary test signs up 4 picoCuries per litre (pCi/L) or higher. If a 2nd test registers over 4 pCi/L, take into consideration taking actions to minimize radon levels in your home, the EPA cautions.