CANSFORD LABS

Drug-fuelled assault case aided by hair strand drug testing

Cansford Labs

Cansford Labs

on May 1, 2025

Drink Spiking

Challenge

A night out with friends took a serious turn when one individual attacked another, causing significant injuries. The attacker, who had no history of violence, claimed to have no memory of the incident and reported experiencing hallucinations. The victim also described the attack as completely out of character and did not wish to press charges. However, due to the severity of the injuries, the police were required to investigate, and the Crown Prosecution Service proceeded with charges.

Solution

Given the attacker’s claim of memory loss and hallucinations, they suspected they may have been spiked with drugs, which could have affected their behaviour. Their solicitor contacted us to conduct a hair strand drug test to establish whether any substances were in their system at the time of the incident.

Result

Using segmented hair analysis, we tested the individual’s sample to detect any drugs present in the time surrounding the event. We segmented the hair down into smaller sections of 3mm, as opposed to our usual 1cm, to give an even more detailed breakdown of substances over a smaller time period. The results confirmed the presence of methamphetamine during the relevant period, supporting the claim that the attack was triggered by drug consumption rather than being a deliberate act of violence.

This evidence played a crucial role in the defence case, helping to demonstrate that the attacker’s altered state was due to the effects of methamphetamine. As a result, the court accepted the argument, and the individual was acquitted.


If you need reliable, court-admissible drug testing to support a legal case, we are here to help. Our specialist team provides fast, accurate hair strand testing and expert reports for a range of legal matters.

 

Cansford Labs

Cansford Labs

From our bespoke, modern and bright laboratory in Cardiff, we offer a UK-wide testing service for individuals and organisations in family law, social care, education and the workplace – focused on delivering exceptional care, quality, and upholding our record as the UK’s fastest drug and alcohol-testing laboratory with our three working day back to lab turn around time.

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