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Historical textIn force on Sept. 7, 2021Source: eCFR

§ 40.179 What does the second laboratory do with the split specimen when it is tested to reconfirm an adulterated test result?

Wording in the annual edition revised as of Oct. 1, 2008, superseded May 2, 2023.

eCFR as of September 7, 2021 ↗
49 CFR § 40.179 — What does the second laboratory do with the split specimen when it is tested to reconfirm an adulterated test result?. Text in force on September 7, 2021. This wording effective October 1, 2008 to May 2, 2023. Source: eCFR as of September 7, 2021, https://www.ecfr.gov/on/2021-09-07/title-49/section-40.179. Retrieved from FMCSR.com, https://fmcsr.com/reg/40.179?asof=2021-09-07, on October 26, 2026. Unofficial compilation; verify against the official source.

(a) As the laboratory testing the split specimen, you must test the split specimen for the adulterant detected in the primary specimen, using the confirmatory test for the adulterant and using criteria in § 40.95 and confirmatory cutoff levels required by the HHS Mandatory Guidelines.

(b) In addition, if the test fails to reconfirm the adulterant result reported in the primary specimen, you may send the specimen or an aliquot of it for testing at another HHS-certified laboratory that has the capability to conduct another reconfirmation test.

[73 FR 35973, June 25, 2008]

Amendment history

4 distinct wordings on file since Oct. 1, 2001
  1. June 1, 2023 → presenteCFR, day-precisediff vs. previous
    [73 FR 35973, June 25, 2008, as amended at 88 FR 27646, May 2, 2023]
  2. May 2, 2023 → June 1, 2023eCFR, day-precisediff vs. previous
    [73 FR 35973, June 25, 2008]
  3. Oct. 1, 2008 → May 2, 2023annual editions 2008–2016diff vs. previousviewing
    [73 FR 35973, June 25, 2008]
  4. Oct. 1, 2001 → Oct. 1, 2008annual editions 2001–2007

A new entry appears whenever the regulatory words change between government snapshots. Day-precise from the eCFR (2017 onward); before that, one snapshot per annual CFR edition (revised as of October 1). Bracketed citations are the Federal Register history printed with the section.