Boardmembers
Meet the team
José Restolho
José received his PhD in Forensic Toxicology in the University of Lisbon (Portugal). Currently works as WDT Technical Advisor and forensic toxicologist at Eurofins Forensic Division (Europe) and is also a certified collector and collector’s trainer for urine, oral fluid and hair. President of EWDTS and member of TIAFT, SOFT and SoHT, authored and co-authored several peer-reviewed journal articles and several plenary lectures at international scientific meetings.
Contact: president@ewdts.org Website: www.eurofins.co.uk
Mark Piper
Mark Piper holds a BSc (Hons) degree and PhD from Dundee University, Scotland. He has been employed by Randox Laboratories Ltd since 1997 as a scientist specialising in the analysis of body fluids for the presence of drugs and alcohol.
Mark was elected to the EWDTS Board by the Society members in 2023 and elected as Secretary by the Board later that year.
Mark spent 10 years in the design and development of toxicology assays for multiple sample types including urine, blood, oral fluids, meconium, vitreous humour and other body tissues. He has directed a range of drug testing trials in Mexico, Singapore and extensively in the USA.
Since 2007 Mark has been the Toxicology Services Manager of Randox Testing Services (RTS) co-ordinating workplace and medico-legal drug testing programmes across the UK and Ireland. He is a recognised Court Reporting Officer having spent many years presenting scientific evidence as a forensic expert witness for industrial tribunals up to Crown and Coroners’ Courts. As well as being a member of several forensic and toxicology associations, he has previously been an advisor to the International Association of Medical Review Officers and the Faculty of Occupational Medicine of the Royal College of Physicians (UK).
Contact: secretary@ewdts.org / guidelines@ewdts.org
Dr. Wim Schielen
Has studied Biochemistry and Organic Chemistry. He has a long track-record in human and veterinary diagnostics. He has been responsible for many veterinary disease- eradication programs in the Foot and Mouth Disease area in far-away countries and developed skills in the setting up of laboratories, implementing quality-systems, training lab- staff on screening and eradication-techniques.
Since end of 2011 he is running a private testing lab that fully focuses on serology (Elisa and PCR) for commercial veterinary testing and The Maastricht Forensic Institute (www.TMFI.nl) with Elisa-Tox testing. Wim is a member of the EWDTS Board, responsible for the Treasury of EWDTS
Contact: treasurer@ewdts.org
Alberto Salomone
I am Associate Professor at the University of Turin and Supervisor of the Forensic Toxicology Unit at Centro Avanzato di Diagnostica in Turin, Italy. My research activity mainly focuses on hair analysis, with close attention to new psychoactive substances (NPS), novel synthetic opioids (NSO), alcohol biomarkers and drug-facilitated crimes (DFC).
I am regularly appointed as expert to provide chemical analysis and assessment within complex judicial cases on biological fluids, DFC, doping cases and post-mortem specimens. I co-edited two books about Hair Analysis in Clinical and Forensic Toxicology and authored or co-authored several peer-reviewed journal articles and several plenary lectures at national and international scientific meetings.
I am member of the most important scientific societies for forensic toxicology and, last but not least, I proudly served for eight years as President of EWDTS.
Contact: alberto.salomone@unito.it LinkedIn: Alberto Salomone
Serap Akgür
Dr. Akgür received her medical degree in 1988, completed her residency in medical pharmacology and forensic toxicology and as the director of a toxicology laboratory, she conducts routine drug testing for probation systems, clinical services, and workplaces.
She has published numerous articles in the field of Forensic Toxicology and has delivered presentations at plenary sessions of national and international scientific meetings.
She is a member of the important scientific societies for forensic toxicology, board member of IACFT, IAMRO and TIAFT, actively working on drug testing applications and regulations for the prevention of drug abuse and addiction.
Contact: serap.akgur@gmail.com LinkedIn: Serap Annette Akgür
Nadine Wentzell
Pharmacist Nadine Wentzell is a Subject Matter Expert (SME) with over 30 years assisting employers in managing substance use that impacts workplace safety. Her work has positioned her as a leading figure in Canada regarding workplace drug and alcohol testing, as well as the advancement of policies that keep pace with societal and industry changes – particularly since the Canadian legalization of cannabis and the ongoing emergence of new substances – that are aligned with legally defensible Standards.
Nadine is known for her collaborative approach in every aspect of her work. She places a strong emphasis on developing Return-to-Work programs that are not only accountable and practical but also supportive and cost-effective, ensuring that both employers and employees benefit from the process.
Drawing upon her thesis research, Nadine designs and delivers experiential training that is firmly rooted in evidence-based practices. Her training initiatives are intended to create genuine culture change within organizations, fostering safer and more supportive workplaces.
Nadine’s professional involvement is extensive. She has served as the past Chair of the International Association of Medical Review Officers (IAMRO) and is actively engaged as a member of multiple industry and health-professional associations. Notably, she is honoured to be the newest, and the first and only non-European member of the European Workplace Drug Testing Society (EWDTS).
Contact: nadine@nadinewentzell.com Phone: +1 902.209.3701
LinkedIn: Nadine Wentzell Website: nadinewentzell.com
Fatima Pereira da Silva
Maria de Fátima Pereira da Silva is a senior consultant in Human Factors and Road Safety Psychology and a tenured Adjunct Professor at the Polytechnic University of Coimbra (Portugal). She chaired T2025 – the 24th International Conference on Alcohol, Drugs and Traffic Safety.
She is the General Delegate of LASER International for CPLP countries and the national representative for Portugal. Fátima serves on the Board of EWDTS and is a member of ICADTS, TPI, AIPSEV, and IRVP. She has collaborated globally with ACTS on the DADSS program and has been invited to speak at the United Nations multiple times.
She is an international keynote speaker, author of several scientific publications, and has chaired multiple global conferences. As a Board Member of EWDTS, she actively promotes organizational safety by advancing strategies to prevent alcohol and drug-related risks, supporting the adoption of appropriate technologies, and strengthening workplace testing cultures grounded in evidence-based practice.
Contact: –
Peter Akrill
Peter has been involved in workplace drug testing for over 30 years. He has extensive experience in laboratory analysis with a number of years having overall responsibility for the oral fluid testing laboratory at Abbott Toxicology. In this role he oversaw the provision of a drug testing services to the workplace, drug addiction treatment and criminal justice sectors. As Senior Toxicologist he is now focussed on providing toxicological advice and support to the analytical service users and advice to employers on workplace substance misuse policies and strategies for their workplace testing programs. Peter also provides specialist training to groups such as Medical Review Officers.
Peter has been a member of the LTG and The International Association of Forensic Toxicologists (TIAFT) for over 20 years. He has published peer reviewed papers and given oral presentations at international conferences. Additionally, he was a member of the forum that developed the UK guidelines for legally defensible workplace drug testing in oral fluid.
Peter has been actively involved with the EWDTS for over 20 years, serving on the board since 2017. He led the team carrying out the most recent revision of the EWDTS guidelines for oral fluid testing.
Contact: peter.akrill@abbott.com LinkedIn: Peter Akrill
Lorna Nisbet
Dr Lorna Nisbet is a Principal Investigator in Forensic Toxicology at the Leverhulme Research Centre for Forensic Science, University of Dundee, and Co-Director of the National Drug Testing and Research Laboratory. She leads the forensic toxicology research portfolio and contributes to the strategic development of national drug testing capability.
She holds a PhD and MSc in Forensic Toxicology from the University of Glasgow and a BSc (Hons) in Analytical and Forensic Chemistry from the University of Strathclyde.
Dr Nisbet’s research focuses on new psychoactive substances, including their detection in seized materials and in workplace, clinical, and forensic biological samples. Her work also examines drug stability in biological matrices such as blood, urine, and oral fluid to improve analytical reliability and evidential robustness. In addition to her research, she supervises PhD students and leads the part-time distance-learning MSc in Drug Analysis and Toxicology at the University of Dundee.
Dr Nisbet is a full Council member of the Advisory Council on the Misuse of Drugs (ACMD) and currently serves as Past Chair of the LTG. She is a Chartered Chemist with the Royal Society of Chemistry and acts as a grant reviewer for the organisation. She is also a member of the Society of Forensic Toxicology (SOFT) and the United Kingdom and Ireland Association of Forensic Toxicology (UKIAFT).
Contact: –
Susan Carter
Susan has over 25 years of specialist experience in the drug and alcohol testing industry, working across laboratory services, toxicology, infectious diseases, and safety critical environments. Her career spans both UK and international markets, with extensive involvement in aviation, transport, and other regulated sectors where compliance, accuracy, and operational integrity are essential.
She has led high performing teams and managed major national accounts, bringing a strong understanding of workplace testing frameworks, chain of custody requirements, and end to end service delivery. Her expertise includes programme design, operational process improvement, and the implementation of robust, quality driven testing solutions that support employer safety, regulatory adherence, and risk reduction.
With a background in strategic planning, lean methodologies, and digital transformation, Susan is known for strengthening service standards, improving operational efficiency, and enhancing customer experience. Her long-standing commitment to the sector reflects a deep understanding of the scientific, regulatory, and practical dimensions of workplace drug and alcohol testing.
Contact: –
Monica Eneholm
Monica has received her medical training at Uppsala universitet. She has worked for some of the major providers of occupational health in Sweden during the last two decades and is currently working for the Swedish Armed Forces. She is an experienced MRO and is a member of the EWDTS board.
Contact: monica.eneholm@gmail.com
Samuel Hudson
Sam is the Technical Manager at Matrix Diagnostics, where he oversees the laboratory’s analytical operations.
In this role, he has worked to develop the laboratory’s analytical methods, ensuring quality and compliance to ISO/IEC 17025 requirements, while also navigating the practical challenges of evolving drug trends. Sam has been working in toxicology laboratories since 2018, after graduating with an MChem in Chemistry from Manchester Metropolitan University.
In addition to being an EWDTS board member, Sam also sits on the Scientific Advisory Committee for Toxicology Laboratories (SACTL), a collaborative forum of industry experts from major UK commercial toxicology laboratories. SACTL was founded with the commitment to develop best-practice guidance and promote consistency in non-criminal drug and alcohol testing, ensuring consistent compliance with ISO/IEC 17025 and providing a unified industry voice to accrediting bodies such as UKAS.
Alongside the EWDTS and SACTL, Sam is also an active member of the LTG and TIAFT.
Contact: –