105 STAT. 958 PUBLIC LAW 102-143—OCT. 28, 1991 Regulations. "(iii) 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 subsection; "(C) require that all laboratories involved in the controlled substances testing of any employee under this subsection shall have the capability and facility, at such laboratory, of performing screening and confirmation tests;
- (D) provide that all tests which indicate the use, in violation
of law or Federal regulation, of alcohol or a controlled substance by any employee shall be confirmed by a scientifically recog- . nized method of testing capable of providing quantitative data regarding alcohol or a controlled substance; '(E) 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; "(F) 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; "(G) 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 subparagraph shall not preclude the use of test results for the orderly imposition of appropriate sanctions under this subsection; and "(H) 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. "(3) The Secretary shall issue rules, regulations, standards, or orders setting forth requirements for rehabilitation programs which at a minimum provide for the identification and opportunity for treatment of railroad employees responsible for safety-sensitive functions (as determined by the Secretary) in need of assistance in resolving problems with the use, in violation of law or Federal regulation, of alcohol or a controlled substance. Each railroad is encouraged to make such a program available to all of its employees in addition to those employees responsible for safety sensitive functions. The Secretary shall determine the circumstances under which such employees shall be required to participate in such program. Nothing in this paragraph shall preclude a railroad from establishing a program under this paragraph in cooperation with any other railroad. "(4) In carrying out the provisions of this subsection, the Secretary shall only establish requirements that are consistent with the international obligations of the United States, and the Secretary shall take into consideration any applicable laws and regulations of foreign countries.