Variation between Labs

Paul Hunter, Founder of FTS, and Sarah Branson, Barrister at Coram Chambers, explore the inconsistencies in hair strand testing (HST) results across different laboratories. They highlight how variations in laboratory methods, decontamination processes, and extraction techniques can lead to significantly different results from the same hair sample.

Their discussion also addresses the impact of sample collection location on the scalp, as differences in sweat distribution can affect drug concentrations. These inconsistencies pose challenges for courts relying on HST, as results can vary depending on the laboratory used. This video emphasises the need for greater awareness of these variations to ensure more accurate and fair interpretations of drug testing results.