# Regulus search export

- Query: `68 FR 31624`
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- Exported: 2026-08-25T15:23:27.823Z

## 1. Procedures for Transportation Workplace Drug and Alcohol Testing Programs

**Citation:** 68 FR 31624  
**Type / status:** rulemaking / historical  
**Agency:** Office of the Secretary  
**Effective / published:** 2003-05-28 / 2003-05-28

The Department of Transportation (DOT) is amending a provision of its drug and alcohol testing procedures to change the instructions to medical review officers (MROs) with respect to reporting specimens as dilute or substituted. The change is based on the Department's experience since the adoption of its current rule and new scientific information on the subject.

### Provenance

- Official: Yes
- Source: <https://www.federalregister.gov/documents/2003/05/28/03-13242/procedures-for-transportation-workplace-drug-and-alcohol-testing-programs>
- Source ID: `federal-register`
- SHA-256: `179f22305f891f2f400b495c464cd1437f76c38fb2ec571ffb2e037437503aa6`
- Retrieved: 2026-08-20T06:04:51.294Z
- Document slug: `federal-register-03-13242`
- Related records: 10