Mississippi Code Title 71. Labor and Industry § 71-7-21

(a) Standards for drug and alcohol testing laboratory certification, suspension and revocation of certification;

(b) Body specimens that are appropriate for drug and alcohol testing;

(c) Methods of analysis and procedures to ensure reliable drug and alcohol testing results, including standards for initial tests and confirmatory tests;

(d) Guidelines on how to establish cut-off detection levels for drugs or their metabolites for the purposes of determining a positive test result;

(e) Chain-of-custody procedures to ensure proper identification, labeling and handling of specimens being tested; and

(f) Retention and storage procedures to ensure reliable results on confirmation tests and retests.