49 C.F.R. § 40.87 What are the cutoff concentrations for initial and confirmation tests?
Title 49 - Transportation
(a) As a laboratory, you must use the cutoff concentrations displayed in the following table for initial and confirmation drug tests. All cutoff concentrations are expressed in nanograms per milliliter (ng/mL). The table follows: (b) On an initial drug test, you must report a result below the cutoff concentration as negative. If the result is at or above the cutoff concentration, you must conduct a confirmation test. (c) On a confirmation drug test, you must report a result below the cutoff concentration as negative and a result at or above the cutoff concentration as confirmed positive. (d) You must report quantitative values for morphine or codeine at 15,000 ng/mL or above.
Title 49: Transportation
PART 40—PROCEDURES FOR TRANSPORTATION WORKPLACE DRUG AND ALCOHOL TESTING PROGRAMS
Subpart F—Drug Testing Laboratories
§ 40.87 What are the cutoff concentrations for initial and confirmation tests?
------------------------------------------------------------------------ Initial Type of drug or metabolite test Confirmation test------------------------------------------------------------------------(1) Marijuana metabolites............ 50 ........................(i) Delta-9-tetrahydrocanna-binol-9- 15 carboxylic acid (THC).(2) Cocaine metabolites 300 150 (Benzoylecgonine).(3) Phencyclidine (PCP).............. 25 25(4) Amphetamines..................... 1000 ........................(i) Amphetamine...................... ....... 500(ii) Methamphetamine................. ....... 500 (Specimen must also contain amphetamine at a concentration of greater than or equal to 200 ng/mL.)(5) Opiate metabolites............... 2000 ........................(i) Codeine.......................... ....... 2000(ii) Morphine........................ ....... 2000(iii) 6-acetylmorphine (6-AM)........ ....... 10 (Test for 6-AM in the specimen. Conduct this test only when specimen contains morphine at a concentration greater than or equal to 2000 ng/mL.)------------------------------------------------------------------------
