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Drug Testing

DOT Rule 49 CFR Part 40 Section 40.99

Subpart F - Drug Testing Laboratories

§ 40.99 How long does the laboratory retain specimens after testing?

(a) As a laboratory testing the primary specimen, you must retain a specimen that was reported with positive, adulterated, substituted, or invalid results for a minimum of one year.

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DOT Rule 49 CFR Part 40 Section 40.97 Q&A

This document explains what DOT Rule 49 CFR Part 40 covers.

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DOT Rule 49 CFR Part 40 Section 40.97

This document explains what DOT Rule 49 CFR Part 40 covers.

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DOT Rule 49 CFR Part 40 Section 40.96

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DOT Rule 49 CFR Part 40 Section 40.95

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DOT Rule 49 CFR Part 40 Section 40.93

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DOT Rule 49 CFR Part 40 Section 40.91

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DOT Rule 49 CFR Part 40 Section 40.89

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DOT Rule 49 CFR Part 40 Section 40.87

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DOT Rule 49 CFR Part 40 Section 40.85

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