§FMCSR.com
Historical textIn force on Oct. 1, 2008Source: annual CFR editions 2001–2016

§ 40.85 What drugs do laboratories test for?

Wording first on file in the 2001 annual edition, superseded November 13, 2017.

govinfo, 2008 edition ↗
Before Jan. 1, 2017 the record is one snapshot per annual CFR edition, revised as of October 1. This is the 2008 edition's wording. An amendment that took effect between Oct. 1, 2008 and Oct. 1, 2008 would not appear until the next edition, so check the citations below and the Federal Register for exact effective dates.
49 CFR § 40.85 — What drugs do laboratories test for?. Text in force on October 1, 2008. This wording effective October 1, 2001 to November 13, 2017. Source: govinfo, 2008 edition, https://www.govinfo.gov/app/details/CFR-2008-title49-vol1/CFR-2008-title49-vol1-sec40-85. Retrieved from FMCSR.com, https://fmcsr.com/reg/40.85?asof=2008-10-01, on October 26, 2026. Unofficial compilation; verify against the official source.

As a laboratory, you must test for the following five drugs or classes of drugs in a DOT drug test. You must not test “DOT specimens” for any other drugs.

(a) Marijuana metabolites.

(b) Cocaine metabolites.

(c) Amphetamines.

(d) Opiate metabolites.

(e) Phencyclidine (PCP).

Amendment history

5 distinct wordings on file since Oct. 1, 2001
  1. June 1, 2023 → presenteCFR, day-precisediff vs. previous
    [65 FR 79526, Dec. 19, 2000, as amended at 75 FR 49862, Aug. 16, 2010; 77 FR 26473, May 4, 2012; 82 FR 52244, Nov. 13, 2017. Redesignated and amended at 88 FR 27643, May 2, 2023]
  2. May 2, 2023 → June 1, 2023eCFR, day-precisediff vs. previous
    [82 FR 52244, Nov. 13, 2017]
  3. Jan. 1, 2018 → May 2, 2023eCFR, day-precisediff vs. previous
    [82 FR 52244, Nov. 13, 2017]
  4. Nov. 13, 2017 → Jan. 1, 2018eCFR, day-precisediff vs. previous
  5. Oct. 1, 2001 → Nov. 13, 2017annual editions 2001–2016viewing

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.