105 STAT. 960 PUBLIC LAW 102-143—OCT. 28, 1991 "(A) establish comprehensive standards for all aspects of laboratory controlled substances testing and laboratory procedures to be applied in carrying out this section, including standards which require the use of the best available technology for ensuring the full reliability and accuracy of controlled substances tests and strict procedures governing the chain of custody of specimen samples collected for controlled substances testing; "(B) establish the minimum list of controlled substances for which individuals may be tested; and "(C) establish appropriate standards and procedures for periodic review of laboratories and criteria for certification and revocation of certification of laboratories to perform controlled substances testing in carrying out this section; "(3) require that all laboratories involved in the testing of any individual under this section shall have the capability and facility, at such laboratory, of performing screening and confirmation tests; "(4) provide that all tests which indicate the use, in violation of law or Federal regulation, of alcohol or a controlled substance by any individual shall be confirmed by a scientifically recognized method of testing capable of providing quantitative data regarding alcohol or a controlled substance; '(5) provide that each specimen sample be subdivided, secured, and labelled in the presence of the tested individual and that a portion thereof be retained in a secure manner to prevent the possibility of tampering, so that in the event the individual's confirmation test results are positive the individual has an opportunity to have the retained portion assayed by a confirmation test done independently at a second certified laboratory if the individual requests the independent test within 3 days after being advised of the results of the confirmation test; "(6) ensure appropriate safeguards for testing to detect and quantify alcohol in breath and body fluid samples, including urine and blood, through the development of regulations as may be necessary and in consultation with the Department of Health and Human Services; "(7) provide for the confidentiality of test results and medical information (other than information relating to alcohol or a controlled substance) of employees, except that the provisions of this paragraph shall not preclude the use of test results for the orderly imposition of appropriate sanctions under this section; and "(8) ensure that employees are selected for tests by nondiscriminatory and impartial methods, so that no employee is harassed by being treated differently from other employees in similar circumstances. " (e) EFFECT ON OTHER LAWS AND REGULATIONS. — "(1) STATE AND LOCAL LAW AND REGULATIONS.— No State or local government shall adopt or have in effect any law, rule, regulation, ordinance, standard, or order that is inconsistent with the regulations issued under this section, except that the regulations issued under this section shall not be construed to preempt provisions of State criminal law which impose sanctions for reckless conduct leading to actual loss of life, injury, or damage to property, whether the provisions apply specifically to commercial motor vehicle employees, or to the general public.