[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: 49CFR40.95]



[Page 653]

 

                        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. 40.95  What criteria do laboratories use to establish that a 

specimen is adulterated?



    (a) As a laboratory, you must consider the primary specimen to be 

adulterated if you determine that--

    (1) A substance that is not expected to be present in human urine is 

identified in the specimen;

    (2) A substance that is expected to be present in human urine is 

identified at a concentration so high that it is not consistent with 

human urine; or

    (3) The physical characteristics of the specimen are outside the 

normal expected range for human urine.

    (b) In making your determination under paragraph (a) of this 

section, you must apply the criteria in current HHS requirements or 

specimen validity guidance.