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07/21/2022
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§40.85 What drugs do laboratories test for?
§40.87 What are the cutoff concentrations for drug tests?
§40.89 What is validity testing, and are laboratories required to conduct it?
§40.91 What validity tests must laboratories conduct on primary specimens?
§40.93 What criteria do laboratories use to establish that a specimen is dilute or substituted?
§40.95 What are adulterant cutoff concentrations for initial and confirmation tests?
§40.96 What criteria do laboratories use to establish that a specimen is invalid?
§40.97 What do laboratories report and how do they report it?
§40.99 How long does the laboratory retain specimens after testing?
§40.101 What relationship may a laboratory have with an MRO?
§40.107 Who may inspect laboratories?
§40.109 What documentation must the laboratory keep, and for how long?
§40.113 Where is other information concerning laboratories found in this regulation?
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