Over the past few years a number of companies have sprouted up offering hair analysis. They advertise drug, allergy, food intolerance and metal exposure assessments, and all you have to do is send in ...

You thought that wild weekend from months ago was ancient history? Think again. While blood tests only catch drug use from the past few days and urine tests stretch to maybe a few weeks, there’s a ...

Add Yahoo as a preferred source to see more of our stories on Google. The trucking industry’s decade-long push for hair follicle drug testing is reaching a critical inflection point as the Trump ...

A university study holds that a survey of the paired pre-employment urine and hair drug screenings of 151,662 truck drivers — of which 12,824 failed the hair test – “can be generalized across the ...

Hair analysis could be the key to understanding adolescent drug usage, as a new study uncovers almost double the number of children were found to be using substances than those who admitted to in a US ...

A rule recently proposed by the Substance Abuse and Mental Health Services Administration (SAMHSA) revives the previously rejected idea of using hair tests in drug screening of federal employees and ...

Some 300,000 truck drivers would fail a hair test for drugs, says the Trucking Alliance – but most of those would pass the DOT-required urine test. A university study holds that a survey of the paired ...