49 CFR 40.181 - What does the second laboratory do with the split specimen when it is tested to reconfirm a substituted test result?

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

View all text of Subpart H [§ 40.171 - § 40.187]

§ 40.181 - What does the second laboratory do with the split specimen when it is tested to reconfirm a substituted test result?

As the laboratory testing a urine split specimen, you must test the split specimen using the confirmatory tests for creatinine and specific gravity, using the criteria set forth in § 40.88.

[88 FR 27646, May 2, 2023]