Latest Posts
Celebrating Lab Week
Every April, we honor our lab professionals during Lab Week. Their work makes a difference in helping to keep our workplaces safe and drug-free.
Challenging the poppy seed defense
A Quest Diagnostics study helps to answer the question: Can eating poppy seeds produce a positive drug test for a job applicant or employee?
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.
