Tag: Dr. Barry Sample


Illicit drug test positivity rate increases

June 3, 2015 By

The percentage of American workers testing positive for illicit drugs has increased for the second consecutive year according to Quest Diagnostics.

Instant testing

Instant drug testing webinar recap

May 8, 2015 By

Two experts from Quest Diagnostics presented a webinar about the advantages and limitations of instant drug testing solutions. Read some key points.


Science and cyborgs with Dr. Barry Sample

April 24, 2015 By

Dr. Barry Sample answers questions from New York City elementary students about the impacts of drug use.


Series: Assessing drug use trends in the United States – Amphetamines

April 17, 2015 By

Join us over the next several weeks as we use several renowned sources to compare and contrast the latest trends in drug use.

Instant testing

Experts present instant drug testing webinar

April 8, 2015 By

Two Quest Diagnostics experts present a webinar on instant drug testing to give you a better understanding of your drug screening options.

Drug Testing

Webinar insights: Tracking the trends

October 10, 2014 By

Dr. Barry Sample, Director of Science and Technology, reviewed key data and insights from the Quest Diagnostics Drug Testing Index.

Drug Testing

Webinar: Tracking the trends

September 18, 2014 By

Industry expert Dr. Barry Sample discusses the latest data from the Quest Diagnostics Drug Testing Index.


Marijuana webinar recap

June 27, 2014 By

Experts presented a webinar about marijuana use, common terminology, state laws, and insights from the Quest Diagnostics Drug Testing Index.


Marijuana: A look at the science & state legislation

June 11, 2014 By

Dr. Barry Sample and D. Faye Caldwell discuss the effects of marijuana use, common terms, review state laws, and marijuana positivity data.

New to Drug Testing

New to Drug Testing: Too small for drug testing? Bloomberg Business Week doesn’t think so

November 21, 2013 By

After reading the Bloomberg BusinessWeek article, I sat down with Dr. Sample to ask him a few of my own questions about small business drug testing.