A blood monitoring study by WWF from 2004, that investigated 47 people from 17 countries, including 39 Members of the European Parliament, found PFOS and six other perfluorinated compounds in every single one of the 47 people tested.
Asins ainas kontrole, ko 2004. gadā veica Pasaules Dabas fonds ( WWF ), izmeklējot 47 cilvēkus no 17 valstīm, tostarp 39 Eiropas Parlamenta deputātus, atklāja PFOS un sešus citus perfluorētos savienojumus katrā no 47 pārbaudītajiem cilvēkiem.