SAP Evaluations in Pasadena, Pasadena, Petaluma, Redding, Riverside - CA Most SAP Evaluations are done to help a DOT driver get back on the road after failing a randomized drug screen, a refusal, or a failed preemployment urine screen. . There is more than one way to fail these types of screens and the most controversial way is what is called a refusal. Refusal simply means that you did not do the screening at the location and at the time that it was given. Here is an example of