Category: Drug Testing
Welcome to the way-back machine called hair testing
Risk and opportunity are linked, but maybe not in the way you think. Because with hair testing, the elimination of risk is the opportunity.
Drug test collections – scheduling just got easier
The new Schedule at Check-in helps make drug test collection scheduling more efficient, consistent, and convenient for donors and employers alike.
Drug positivity rates continue at historically high levels
Marijuana positivity continues double-digit increases to keep overall drug positivity at historically high levels, according to the latest Quest Diagnostics Drug Testing Index.
Ask the Experts: Hair drug test collections
The amount of hair needed for a hair drug test is approximately 100 milligrams made up of the first 1-½ inches from the root end. The hair is typically cut from the crown of the back of the head in a manner where it will not be as noticeable. Learn more about hair drug test collections.
Thwarting drug test cheaters
There are safeguards to help employers prevent a job applicant or employee who uses drugs from cheating or altering a drug test. Learn more.
Ask the experts: Hair testing vs. hair follicle testing
What is the difference between hair drug testing and hair follicle drug testing? We asked a Quest expert to explain.
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?
Common questions about hair testing
An expert from Quest Diagnostics answers some of the most common questions about hair drug testing.
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.
