Code of Federal Regulations · Section

§ 40.181 — What Does The Second Laboratory Do With The Split Specimen When It Is Tested To Reconfirm A Substituted Test Result?

49 C.F.R. § 40.181

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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.

49 C.F.R. § 40.179 49 C.F.R. § 40.183

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