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Ensuring Reliable Results

At Lextox, the reliability of our results and the client service we provide are our top priorities.

This means that our clients benefit from receiving legally defensible Analysis Results and Expert Reports within an average of 5 working days of us receiving the sample at our UK laboratory.

Our experts are members of the Society of Hair Testing, an independent international body which provides guidance on appropriate analysis techniques for the detection of drugs and alcohol in hair. By complying with the Society of Hair Testing consensus, Lextox is providing hair analysis within internationally agreed recommendations.

ISO 17025 UKAS Accreditation

Lextox is accredited to test for a wide range of drugs in hair and was, at the time, the first independent UK owned laboratory to attain ISO 17025 UKAS accreditation (No. 7516) for hair alcohol testing. Lextox works to right-first-time quality assurance procedures to minimise delays and ensure reliability.

The United Kingdom Accreditation Service (UKAS) is the sole national accreditation body recognised by government to assess, against internationally agreed standards, organisations that provide certification, testing, inspection and calibration services.

UKAS accreditation demonstrates the laboratories competency in testing to ensure reliability of the analysis results and delivers confidence in the service of the testing laboratory.

You can view our Schedule of Accreditation here and understand more about the importance of UKAS accreditation by visiting

Laboratory Director

Our Laboratory Director, Dr Robert Kingston, has been developing and implementing methods for the detection of substances in hair, specifically for family law and child care proceedings, for over 12 years. Our ISO 17025 UKAS accredited laboratory is overseen by Dr Kingston and he was the first to develop ISO 17025 accredited hair tests for many drugs of abuse and alcohol markers.

Responsive / Reliable / Results