# What information do laboratories report to MROs regarding split specimen results?

**Citation:** 49 CFR 40.183  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

(a) As the laboratory responsible for testing the split specimen, you must report split specimen test results by checking the “Reconfirmed” box and/or the “Failed to Reconfirm” box (Step 5(b)) on Copy 1 of the CCF, as appropriate, and by providing clarifying remarks using current HHS Mandatory Guide

## Document text

(a) As the laboratory responsible for testing the split specimen, you must report split specimen test results by checking the “Reconfirmed” box and/or the “Failed to Reconfirm” box (Step 5(b)) on Copy 1 of the CCF, as appropriate, and by providing clarifying remarks using current HHS Mandatory Guidelines requirements.

(b) As the laboratory certifying scientist, enter your name, sign, and date the CCF.

[65 FR 79526, Dec. 19, 2000, as amended at 73 FR 35972, June 25, 2008]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-40.183>
- Source ID: `ecfr`
- SHA-256: `ced41eb3d742c7aad57a3740d4e696f953636830e41804c1b07bab82a1431a2d`
- Retrieved: 2026-08-20T05:54:21.729Z
- Exported: 2026-08-22T15:00:35.446Z
- Document slug: `49-cfr-40-183`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "40",
  "section": "40.183",
  "subpart": "Subpart H—Split Specimen Tests",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```