Ask X3What does 49 CFR 40.86 (What is urine validity testing, and are laboratories required to conduct it?) require?
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Based on 49 CFR 40.86, urine validity testing is the evaluation of a urine specimen to see if it matches normal human urine. Specifically, it checks whether foreign substances or adulterants have been added, if the urine is diluted, or if the specimen has been substituted. Furthermore, under 49 CFR 40.86, laboratories are strictly required to conduct this validity testing on specimens.
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