CFR > Title 49 - Transportation > SUBTITLE A—Office of the Secretary of Transportation > PART 40—PROCEDURES FOR TRANSPORTATION WORKPLACE DRUG AND ALCOHOL TESTING PROGRAMS > SUBPART H—Split Specimen Tests (§40.171 to §40.189) > 40.181—What does the second laboratory do with the split specimen when it is tested to reconfirm a substituted test result?

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 the split specimen, you must test the split specimen using the confirmatory tests for creatinine and specific gravity, and using the confirmatory criteria set forth in § 40.93(b).
[73 FR 35973, June 25, 2008]