Hair follicle drug tests involve removing a small hair sample for laboratory testing. Results can show if a person has been using certain drugs or prescription medications in the previous 3 months.

The genome of a man who lived on the western coast of Greenland some 4,000 years ago has been decoded, thanks to the surprisingly good preservation of DNA in a swatch of his hair so thick it was ...

Similarly, elevated cortisol levels—a hormone associated with stress—were observed in hair samples seven weeks after participants underwent an acute laboratory stressor. The study was ...

The Supreme Public Prosecutors Office reported Sunday it began using hair samples to test suspects for methylenedioxymethamphetamine, commonly known as ecstasy. The urine tests law enforcement ...

Researchers from the University of California, San Francisco (UCSF) and Makerere University in Uganda have used hair and blood samples from three-month old infants born to HIV-positive mothers to ...

Measured via hair samples, long-term glucocorticoid exposure was linked to higher incidental cardiovascular disease risk. Long-term glucocorticoid levels measured via scalp hair are associated ...