§FMCSR.com
Current textIn force on July 24, 2023Source: eCFR

§ 40.89 What are the adulterant cutoff concentrations for initial and confirmation urine tests?

Current wording, effective June 1, 2023.

eCFR as of July 24, 2023 ↗
49 CFR § 40.89 — What are the adulterant cutoff concentrations for initial and confirmation urine tests?. Text in force on July 24, 2023. This wording effective June 1, 2023 to present. Source: eCFR as of July 24, 2023, https://www.ecfr.gov/on/2023-07-24/title-49/section-40.89. Retrieved from FMCSR.com, https://fmcsr.com/reg/40.89?asof=2023-07-24, on October 26, 2026. Unofficial compilation; verify against the official source.

(a) As a laboratory, you must use the cutoff concentrations for the initial and confirmation adulterant testing as required by the HHS Mandatory Guidelines and you must use two separate aliquots—one for the initial test and another for the confirmation test.

(b) As a laboratory, you must report results at or above the cutoffs (or for pH, at or above or below the values, as appropriate) as adulterated and provide the numerical value that supports the adulterated result.

[73 FR 35970, June 25, 2008. Redesignated at 88 FR 27643, May 2, 2023]

Amendment history

4 distinct wordings on file since Oct. 1, 2001
  1. June 1, 2023 → presenteCFR, day-precisediff vs. previousviewing
    [73 FR 35970, June 25, 2008. Redesignated at 88 FR 27643, May 2, 2023]
  2. May 2, 2023 → June 1, 2023eCFR, day-precisediff vs. previous
    [65 FR 79526, Dec. 19, 2000, as amended at 66 FR 41951, Aug. 9, 2001; 73 FR 35970, June 25, 2008]
  3. Oct. 1, 2008 → May 2, 2023annual editions 2008–2016diff vs. previous
    [65 FR 79526, Dec. 19, 2000, as amended at 66 FR 41951, Aug. 9, 2001; 73 FR 35970, June 25, 2008]
  4. Oct. 1, 2001 → Oct. 1, 2008annual editions 2001–2007
    [65 FR 79526, Dec. 19, 2000, as amended at 66 FR 41951, Aug. 9, 2001]

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.