The Importance of Chain of Evidence in Hair Strand Testing
Paul Hunter, Founder of FTS, and Sarah Branson, Barrister at Coram Chambers, explore the importance of consistency and accuracy in hair strand testing, particularly regarding the location of sample collection on the scalp. Differences in collection points can lead to significant variations in drug concentration levels, impacting the reliability of results.
The discussion emphasises the necessity of maintaining a proper chain of evidence, ensuring samples are collected, preserved, and analysed correctly to avoid misinterpretation. This video also touches on challenges posed by hair dye and the role of complementary testing methods in improving accuracy.
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