PEHSU Factsheet: Formaldehyde > Testing children if there is an exposure concern
It is not recommended to test children’s blood or urine for levels of formaldehyde or associated breakdown products because the test result is not a good measure of exposure. These levels can vary highly from person to person, and the results of these tests do not have clinical significance. Test results will not be helpful in predicting the most important interventions for reducing/stopping the health effects of exposure, and treating symptomatically (for example, treating asthma symptoms).