In studies using rats, mice, and dogs, endrin did not produce cancer. However, most of these studies did not accurately evaluate the ability of endrin to cause cancer. No significant excess of cancer has been found in exposed factory workers. The EPA has determined that endrin is not classifiable as to its human carcinogenicity because there is not enough information to allow classification. If you are exposed to endrin, it can be detected in your blood, breast milk, or fatty tissue.
Tests can measure endrin in the blood or fat of people recently exposed.
These tests aren't available at most doctors' offices, but can be done at special laboratories that have the right equipment. Although these tests can be used to confirm that a person has been exposed to endrin, it is not yet possible to use these tests to predict the type or severity of any health effects that might occur. Animal testing is sometimes necessary to find out how toxic substances might harm people and how to treat people who have been exposed. Laws today protect the welfare of research animals and scientists must follow strict guidelines. Their specialists can recognize, evaluate, and treat illnesses resulting from exposure to hazardous substances.