[Code of Federal Regulations]

[Title 49, Volume 1]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 49CFR40.87]



[Page 651-652]

 

                        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 652]]



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-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.)

------------------------------------------------------------------------



    (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.