# Regulus search export

- Query: `88 FR 27646`
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- Exported: 2026-08-24T22:16:40.923Z

## 1. What does the second laboratory do with the split specimen when it is tested to reconfirm a substituted test result?

**Citation:** 49 CFR 40.181  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective / published:** 2026-08-18 / Not stated

\[88 FR 27646, May 2, 2023\]

### Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-40.181>
- Source ID: `ecfr`
- SHA-256: `c6360a91ad2c167ef2698803e8dc241002f6e5f6f11d4595eb85bf7c6c625dff`
- Retrieved: 2026-08-20T05:54:21.729Z
- Document slug: `49-cfr-40-181`
- Related records: 8