As with voluntary statements, the police may explain that your cooperation in taking a lie detector test may eliminate you as a suspect and disprove the accusation against you. However, the test can be administered by the authorities in an unfair or biased manner. The police are not required to take the results into account when deciding whether to charge you, and even favorable results are in most cases inadmissible in court to disprove your guilt. No one accused or suspected of a crime should ever agree to submit to a lie detector test or voice stress analysis test without first contacting an attorney.