FEMA is also questioning the tests CBS 2 used in our investigation to find the formaldehyde levels.
Because questions have been raised about how we conducted our test, we decided to walk you through exactly what we did.
CBS 2's Megan Terlecky, who started this investigation, takes us through the testing process.
We went door to door to find someone who was willing to let us test their FEMA provided home.
We made sure they did not smoke inside of their home, because that would throw off our tests.
-We placed the test in the kitchen area as recommended by the testing company.
-We recorded the exact time.
-Then we left the test there for about 24 hours.
-We then recorded the exact time we took the test down and placed it in the provided air tight bag.
-The tests were sent off to the lab where they analyzed the results.
Now the test we used came from advanced chemical sensors.
They have been testing formaldehyde this way for more than 25 years.
They are an accredited lab which means they have been inspected as recently as may of this year and have been certified for quality assurance.
And this is not the first time their tests have been used to test FEMA provided homes.
This type of test was used to measure formaldehyde levels in Louisiana after Katrina.
And the results were confirmed by an independent study.
It's even mentioned in this congressional report.
We spoke with the Director of the lab Wednesday and he takes issue with many of the FEMA accusations.
“It wasn't peak levels it was an average level another said it was not a nationally recognized method but it is a nationally recognized method it's recognized by the health administration.”
Megan also spoke with University of Iowa Professor Peter Thorne.
He is the same professor we consulted before we did our tests.
We showed him the results and Thorne says if FEMA questions CBS 2's test; then why not do their own?

“If I were advising FEMA I would suggest why not do some re-sampling using the labs and methodology that they choose and then compare the levels and see where we are,” Dir. UI Environmental Health Sciences Professor Peter Thorne said.

Now to let you know Professor Thorne has been out of town until Wednesday. That's why we're just now sharing our results with him. He's also working with Congressman's Loebsack's office and the Iowa Department of Public Health on this issue.
How We Tested For Formaldehyde