[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: 49CFR40.89]



[Page 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. 40.89  What is validity testing, and are laboratories required 

to conduct it?



    (a) Specimen validity testing is the evaluation of the specimen to 

determine if it is consistent with normal human urine. The purpose of 

validity testing is to determine whether certain adulterants or foreign 

substances were added to the urine, if the urine was diluted, or if the 

specimen was substituted.

    (b) As a laboratory, you are authorized to conduct validity testing.



[65 FR 79526, Dec. 19, 2000, as amended at 66 FR 41951, Aug. 9, 2001]