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Current textSource: eCFR

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

Current wording, effective June 1, 2023.

eCFR (current) ↗
What changedOct. 1, 2008 wording → June 1, 2023 wording (current)+76 added−62 removedHide

(a) SpecimenAs validitya testinglaboratory, isyou themust evaluationuse of the specimencutoff toconcentrations determinefor ifthe itinitial isand consistentconfirmation withadulterant normal human urine. The purpose of validity testing isas torequired determineby whetherthe certainHHS adulterantsMandatory orGuidelines foreignand substancesyou weremust addeduse totwo theseparate urine,aliquots—one iffor the urineinitial wastest diluted,and oranother iffor the specimenconfirmation was substitutedtest.
(b) As a laboratory, you must conductreport validityresults testing.
[65at FRor 79526,above Dec.the 19cutoffs (or for pH, 2000at or above or below the values, as amendedappropriate) atas 66adulterated FRand 41951,provide Aug.the 9,numerical 2001;value that supports the adulterated result.
[73 FR 35970, June 25, 2008. Redesignated at 88 FR 27643, May 2, 2023]

49 CFR § 40.89 — What are the adulterant cutoff concentrations for initial and confirmation urine tests?. Text current through October 22, 2026. This wording effective June 1, 2023 to present. Source: eCFR (current), https://www.ecfr.gov/current/title-49/section-40.89. Retrieved from FMCSR.com, https://fmcsr.com/reg/40.89, 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. Set a case date in the header to read any earlier wording.