Wellbeing Focused Independent Drug and Alcohol Testing

OdiliaClark is a specialist impairment risk management provider, focused on wellbeing and independent drug and alcohol testing, that works to protect organisations from the impact of impaired staff due to alcohol, drug and substance use.


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We work across all types of sectors and are specialists in the following…


Whether EASA, FAA, ICAO or regional regulators OdiliaClark has deep industry knowledge to support a range of aviation clients.

Oil & Gas

We work to IOGP, DATIA and IPIECA guidelines to provide specialist drugs and alcohol testing for the Oil & Gas industry.


OdiliaClark offers reliable, independent testing with market leading equipment designed to protect your business and workforce.

Vehicle & Fleet

One vehicle or many, the services of OdiliaClark can provide cost effective solutions for both the vehicle and operator.

FORS Members


From organisations that work with children through to the highest level of sport OdiliaClark offers open and transparent testing.

Manufacturing & Construction

Manufacturing and construction are two of the highest sectors for substance related issues, OdiliaClark can support.


Why choose us as your independent drugs and alcohol partner?

Founded in 2018, OdiliaClark has grown quickly due to its ‘independent-of-Laboratory’ positioning and partnering with Dräger to be the only impairment risk management business to specialise in the use of Dräger equipment for workplace drugs and alcohol management.


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Equipment Approvals.

In the largely unregulated space of drugs and alcohol testing equipment manufacturing, the only true control of quality is conformity to a government standard, Dräger  equipment typically holds multiple approvals including the Home Office approval which is one of the hardest government approvals to achieve globally.

OdiliaClark will only use equipment that has been through rigorous testing and review and ensures that all equipment is maintained in accordance with the manufacturer guidelines.


We offer a wide range of services designed to support a safe workplace

Setting the Standard - Policy

We offer specialist packages in support of drug and alcohol testing programme roll-outs. We can offer policy development through to a full implementation with induction presentations and staff information collateral.

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Drug & Alcohol Testing

Supporting your business to maintain a safe working environment by offering an independent Drugs and Alcohol testing service using state-of-the-art Dräger equipment as used by the Police and Fire Services.

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Our training courses can be taken at our head office in Derby or we can create a bespoke training package for your business. Training courses include Awareness Training, Testing Procedures and Refresher Courses.

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Fleet Management

The Dräger Interlock device offers an ethical and reliable approach to impairment management. The Interlock prevents drivers from starting a vehicle if they are under the influence of alcohol and reduces the risk of incidents.

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We pride ourselves on our service and our clients recognise that.

Unrivalled Equipment

Home Office approval is one of the toughest approvals to achieve globally and why OdiliaClark has chosen to partner with Dräger.

Managing Results

We can offer a range of wellbeing interventions from a basic education programme to a fully bespoke programme of recovery.

Independent Labs

OdiliaClark works with approve ISO 17025, UKAS accredited laboratories to conduct chain of custody compliant confirmatory testing.

Our happy clients...

I'd like to thank OdiliaClark for the support of the recent weeks with the provision of advice, training and enabling Gemini Rail Group to introduce a robust self-sufficient solution into Drugs and Alcohol testing. The education class enabled the team to flawlessly execute our winter schedule of random testing.

Rob Mackay | Gemini Rail Group

We had an issue with some of our apprentices as they were coming in to work. We worked with OdiliaClark to develop the policy and company approach towards drugs and alcohol management, we then informed the staff of the new working requirements and held an amnesty period during which the OdiliaClark team rolled out education across the business. We then agreed a testing schedule which was has been smoothly executed. A very positive experience.

Health and Safety Manager | Engineering Sector, Manufacturing

The sector knowledge and experience of the team at OdiliaClark enables them to identify the right solutions for our operating profile. We have the right solutions in place and a high level of confidence in the testing and results.

John | Business Jet COO

These systems provide us with results which tell us a person is fit for work and able to work safely at the time of testing. Which ultimately means less lost in terms of productivity and minimises the disruption which can be experienced with urine testing

Pam | Construction, Civil Structures

Frequently asked questions…

We understand you may have questions, please read our FAQ below, For any further requests or support send us your questions to info@odiliaclark.com and one of our team will be in touch.

You can chat to us using the live chat below or email info@odiliaclark.com with any questions.

Testing programmes vary from one business to another. We can offer fully outsourced drugs and alcohol testing programmes or we can train your staff to carry out drugs and alcohol testing inhouse. Annual refresher training is required for all inhouse testers.
Yes, we work in a variety of industries throughout the UK, Europe and further afield.  We are always open to bringing a new location on-line.  Please contact us with any requirements info@odiliaclark.com.

A list of all personnel on site on the day of testing will be generated prior to the Testing Associate arriving on site. This list will be provided to the Testing Associate from the Testing Agency who will randomly select the appropriate number of individuals.

Yes, they will be asked by the Testing Associate if they agree to be tested. The Donor must provide written consent. The employee should be made aware that a refusal to be tested will be regarded as an unreasonable response and treated as a positive test result which may lead to disciplinary action up to and including dismissal.

Testing should be viewed as a safety net working in conjunction with support programmes to ensure employees and the organisation are protected.

Most medications are safe to take but any medication either prescribed or over the counter medication has the potential to cause side effects which could affect yours and others safety in the workplace.  You should advise your GP/Pharmacist of your job role and/or operating plant and equipment or operating in a potentially dangerous environment.  The GP/Pharmacist can then decide whether it is appropriate for you to work normally or recommend alternative arrangements.  If you are experiencing side effects such as drowsiness, fatigue or adverse effects to your balance and you work in a safety-critical role or drive for business you should let your line manager know. They may take advice from Occupational Health to ensure it is safe for you to continue to undertake your current duties or find out if a temporary amendment to duties is required.

Yes. Any support will be conditional upon you accepting professional help and adhering to an agreed support programme. Recovering from a substance abuse issue can be a lifelong journey and you should have no problem with being tested regularly. Attending work whilst under the influence of either drugs or alcohol is not acceptable and will be considered as gross misconduct and may lead to disciplinary action up to and including dismissal.

Yes. Alcohol can stay in your system for a significant period. Alcohol metabolises at different rates and is dependent upon various factors including an individual’s build, health and any other medications they may be taking. It is your responsibility to report for work unimpaired by alcohol or drugs or their effects.

Many factors determine how long drugs remain present in the body. Some drugs, including cannabis, can be detected weeks after consumption and therefore unannounced, random screening may lead to a positive result.  It should be noted that many recreational drugs are illegal and there is a significant risk of prosecution if such substances are consumed whilst at work.

Yes. You will be asked about any medications you are taking if the test leads to a non-negative result. All non-negative results will require further laboratory analysis. The Testing Associate will ensure that all information about your medication is noted with the sample. Taking more than the prescribed amount can affect performance and may be regarded as misuse or abuse.

If you take the medication responsibly, and have discussed it with your line manager if in any doubt, then a non-negative test should not be a concern for those medications. Modern testing equipment can detect low levels of drugs, and the laboratory process is part of separating out what is acceptable intake of medication and what is not.

This should be defined within the organisation’s drugs and alcohol policy, however, you may be stood-down  if your role or the activities you perform are classified as safety critical.

In these circumstances, it will be regarded as gross misconduct and you will be suspended from duty immediately and liable to disciplinary action up to and including dismissal.

A process known as ‘chain of custody’ applies. This ensures that two samples (Sample A and Sample B) are clearly labelled and sealed in tamper-proof tubes and envelopes in front of the Donor. It provides an audit trail for the sample sent for analysis to safeguard its identity and integrity from collection through to reporting of the test results. The process is auditable to ensure compliance and that a defensible report is produced. Sample A will be tested to verify positive/negative result from the on-site testing. The laboratory will hold your sample B for up to four months in case of dispute or if you wish to organise an independent analysis of your sample at your own cost.

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