[Code of Federal Regulations]
[Title 49, Volume 1]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR40.87]

[Page 614-615]
 
                        TITLE 49--TRANSPORTATION
 
          Subtitle A--Office of the Secretary of Transportation
 
PART 40_PROCEDURES FOR TRANSPORTATION WORKPLACE DRUG AND ALCOHOL TESTING 
PROGRAMS--Table of Contents
 
                   Subpart F_Drug Testing Laboratories
 
Sec.  40.87  What are the cutoff concentrations for initial and confirmation tests?

    (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

[[Page 615]]

per milliliter (ng/mL). The table follows:

------------------------------------------------------------------------
                                     Initial
    Type of drug or metabolite         test         Confirmation test
------------------------------------------------------------------------
(1) Marijuana metabolites........           50  ........................
(i) Delta-9-tetrahydrocanna-binol-              15
 9-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.)
------------------------------------------------------------------------

    (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.