Category: Drug Testing

Urine testing

Thwarting drug test cheaters

May 4, 2021 By

There are safeguards to help employers prevent a job applicant or employee who uses drugs from cheating or altering a drug test. Learn more.

Hair testing

Ask the experts: Hair testing vs. hair follicle testing

April 27, 2021 By

What is the difference between hair drug testing and hair follicle drug testing? We asked a Quest expert to explain.

News

Challenging the poppy seed defense

April 13, 2021 By

A Quest Diagnostics study helps to answer the question: Can eating poppy seeds produce a positive drug test for a job applicant or employee?

Hair testing

Ask the experts: Effects of hair treatments on drug test results

April 6, 2021 By

Our scientific expert, Dr. Barry Sample, answers the question: Can products and treatments affect hair drug test results?

Hair testing

Common questions about hair testing

March 9, 2021 By

An expert from Quest Diagnostics answers some of the most common questions about hair drug testing.

Drug Testing

Would-be cheaters bet on synthetic urine

February 9, 2021 By

One popular way that an individual attempts to cheat a urine drug test is synthetic urine. Learn more about safeguards offered by trained collectors at Quest Diagnostics.

Drug Testing

Beyond pre-employment drug testing

February 2, 2021 By

Combining one or more reasons for testing is the best way to avoid hiring applicants who use drugs while discouraging drug abuse among employees.

Urine testing

Seven facts about urine drug testing

January 26, 2021 By

Why is urine testing the most frequently used method for workforce drug testing? Get the facts about urine testing from Quest Diagnostics.

Drug Testing

Does workforce drug testing work?

January 19, 2021 By

There is a wealth of research that shows that workforce drug testing can help to foster a healthy, safe, drug-free environment.

Drug Testing

Why choose Quest Diagnostics

January 5, 2021 By

Quest Diagnostics is the only SAMHSA-certified and CAP-FDT-accredited laboratory to offer in-house testing for all three of the most popular drug test types: urine, oral fluid, and hair.