Hair Sampling Method (IMAGE) University College London Caption A description used in the hair sampling method used by UCL researchers to detect drugs in the hair of women who had recently given birth. Credit Anna David, UCL Usage Restrictions Credit: Anna David, UCL License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.