Latest Posts
Ask the experts: Effects of hair treatments on drug test results
Our scientific expert, Dr. Barry Sample, answers the question: Can products and treatments affect hair drug test results?
Ask the experts: The life of a drug testing specimen
Our labs handle more than eight million drug testing specimens yearly while maintaining an excellent track record of reliability and accuracy.
Common questions about hair testing
An expert from Quest Diagnostics answers some of the most common questions about hair drug testing.
The new age of marijuana white paper
This white paper aims to shed light on the drug, its legal classification, and the importance of drug testing in the workplace.
Would-be cheaters bet on synthetic urine
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.
Beyond pre-employment drug testing
Combining one or more reasons for testing is the best way to avoid hiring applicants who use drugs while discouraging drug abuse among employees.
Seven facts about urine drug testing
Why is urine testing the most frequently used method for workforce drug testing? Get the facts about urine testing from Quest Diagnostics.
Does workforce drug testing work?
There is a wealth of research that shows that workforce drug testing can help to foster a healthy, safe, drug-free environment.
Random drug testing benefits employers
As drug use continues to rise, it is more important than ever to combine pre-employment testing with a random drug testing program.
Why choose Quest Diagnostics
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.
