I think that its a good idea to do the tests. But I will say when you have a driver hurt and he is on pain meds and racing such as Chub Frank or say a Steve Francis or someone like that and they fail because of the pain killers then what? I mean I have seen pain meds cause a negative test but then when the person said hey I am on pain meds they pass. So a driver can fail a drug test and still be able to race as long as he has a doctors note for a prescription.