(a) Specimen validity testing is the evaluation of the specimen to determine if it is consistent with normal human urine. The purpose of validity testing is to determine whether certain adulterants or foreign substances were added to the urine, if the urine was diluted, or if the specimen was substituted.
(b) As a laboratory, you must conduct validity testing.
[65 FR 79526, Dec. 19, 2000, as amended at 66 FR 41951, Aug. 9, 2001; 73 FR 35970, June 25, 2008. Redesignated at 88 FR 27643, May 2, 2023]
This information was copied from a federal government resource. Always verify the accuracy of this information against the most recent version of the Code of Federal Regulations: https://www.ecfr.gov/current/title-49/subtitle-A/part-40 or the Office of Drug & Alcohol Policy & Compliance: https://www.transportation.gov/odapc.