CBD Lab Testing UK

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Order CBD testing at an
accredited ISO 17025 Lab

We offer high quality CBD testing services to help manufacturers, importers and retailers comply with cannabidiol regulations in the UK and EU.


Whether it is to confirm the CBD content of raw material from a supplier or to verify that the THC level is within the legal limits, our ISO accredited CBD testing service can deliver accurate results, fast.


Using validated test methods, highly sensitive and specialised lab equipment, our testing service is designed to give you the confidence your CBD products comply with legal, safety and quality requirements.


CBD regulation is fast changing, so it is more important than ever to ensure your CBD oil undergoes testing at an ISO accredited lab. It will protect your company from future regulation, and leave your customers confident that you’re not cutting corners when it comes their safety.


A world-leader in CBD testing, the lab has delivered CBD and THC potency testing services on a wide range of CBD and cannabis products including:


  • CBD oil
  • Cannabis plant material including flowers, leaves and pollen
  • CBD isolate powder & crystals
  • CBD e-liquid
  • CBD tea
  • CBD food including gummies & mints
  • CBD patch (Both paper & fabric type)
  • Hemp seed oil


Note: Accreditation status can be claimed for most product categories.


Read on to learn more about CBD testing and our testing service. Please note that this service is outsourced – Medic Pro Ltd does not carry out the testing.


CBD drinks & Water soluble (encapsulated) CBD products: Unfortunately we cannot test water soluble CBD without knowing more about the encapsulation structure. The lab needs to understand the composition of the structure in order to break it down and get to the CBD/CBN and most manufacturers do not share that information with third parties.

What you’ll learn:

  • What is CBD testing?
  • The stability of CBD
  • THC Testing
  • Testing by unaccredited labs puts your products at risk
  • Which CBD testing lab to use?
  • CBD Testing Price
  • Special Features of the service
  • CBD Testing Service details
  • Request a quote
  • How the service works
  • About our Regulatory Support service
  • FAQ

…and more

“Without a doubt, they are an invaluable source of regulatory information. We always make time to hear what they have to say.”

Managing Director (UK Manufacturer/Distributor)

What is CBD Testing


CBD testing involves sending a sample to a specialist analytical laboratory that has the expertise and equipment to test CBD products.


While there are many things you can test a CBD product for – pesticides, metals, solvents, mycotoxins etc – our research suggests two tests are absolutely critical: CBD and THC content.

Are you a CBD business?  Build brand awareness and get higher in internet search rankings by joining our CBD Directory here.

The stability of CBD


Active ingredients in medicines are sensitive to light, temperature and pressure. CBD is no different. From the moment it is extracted from the source plant, CBD begins to degrade. By the time it been processed into the finished product and reached the shelves, the CBD content in a CBD oil may have diminished to levels lower than what is considered acceptable.


For this reason, accurate testing to verify the true CBD content is key.


The poor stability of CBD could be one of the reasons why we have seen mislabelling of CBD products in the US – something that is likely to be a real issue in the UK also. Read more about this issue in our blog post here.


THC Testing


Tetrahydrocannabinol – THC for short – is a controlled substance in the UK so it is essential raw material CBD is tested for THC to confirm only trace (very low) levels.


Manufacturers should take extra care when choosing a lab for THC testing because, while there are now numerous labs available in US and EU offering THC testing, not all offer high quality THC testing.


Read more on this topic in Which CBD testing lab to choose? below.


CBD testing by an unaccredited lab and with an unaccredited THC test puts your products at a higher risk of seizure by police or border control. 


The only way to be sure of the THC level of a product is to conduct accredited ISO 17025 THC testing, which is why it is the ‘go to’ test for the police. Accredited ISO testing involves using a well-established test method supported by rigorous method validation.


An independent, government-approved body – the accreditation body – regularly verifies that the lab is following correct ISO procedures.


Accreditation is a sign of quality and reliability so it is no surprise accredited THC testing used by the police in the UK and across the world.

What about testing for pesticides, solvents, metals, mycotoxins etc?


In our research, we found that most CBD raw material suppliers provided a certificate of analysis (test certificate) which quantified, to some extent, pesticides, solvents etc. While there may be some debate as to the accuracy of the individual tests, we consider that, on balance, these are likely to be at low or trace levels until evidence suggests otherwise.


In light of this, we currently we recommend our clients take the certificate on face value and accept that the health risks are low, no more than an imported food product, which would be reasonable.


Contact us if you have any concerns on this topic.


What about testing for other cannabinoids and terpenes?


Meaningful testing to quantify other cannabinoids such as CBG andCBC, given the very small quantities, can be difficult and costly. For the time being, we currently recommend to accept the results in the test report by the raw material supplier.

CBD Oil Testing offered by Medic Pro

Which CBD testing lab to choose?  Accredited labs & tests and non-accredited ones

Which CBD testing lab to choose?


Globally there are now many CBD testing labs to choose from but they differ in one key aspect:  Accreditation.


And while a lab might be accredited they may not offer an accredited THC test. The highest quality test you can get (globally) is an accredited lab with an accredited THC test (the one used by the police and the service offered by Medic Pro).


When choosing a lab your options are:


  1. Accredited lab + accredited THC test (Notes: highest quality; both the lab and THC is accredited; most accurate CBD and THC test; used by police; full regulatory compliance),
  2. Accredited lab but non-accredited THC test (mid-quality; lab is accredited but the THC test is not; modest accuracy; partial compliance),
  3. Non-accredited lab and THC test (lowest quality & accuracy; neither lab or THC test accredited; limited compliance with regulations).


Our CBD testing services offer the highest quality CBD testing: Accredited lab running an accredited THC test.

CBD Testing Price


The price of CBD testing depends on a number of factors:


  • Test method
  • Equipment
  • Accreditation of Test
  • Accreditation of Lab
  • Lab/technicians experience
  • Additional services offered


Test Method & Equipment


A number of test methods are available for CBD analysis including GC-MS, HPLC and UPLC. Some CBD testing services offer ‘semi-quantitative’ methods such as GC-MS which essentially means they are not highly accurate.


To verify CBD and THC content our lab uses Ultra Performance Liquid Chromatography (UPLC), which is more expensive but one of the most accurate methods on the market.


Our advice when choosing a testing lab is to be wary of low cost CBD testing services. Cheap testing services are unlikely to give accurate CBD or THC testing results because the equipment used is likely to be unreliable, the technicians inexperienced and lab without accreditation status. It puts your products at risk of seizure should the THC analysis be inaccurate.


Importance of accredited ISO 17025 THC testing 


Because THC is a controlled substance, it is crucial that you verify the THC content of your products is zero (with limit of detection at 0.01%). You may need to provide lab results to the police, Trading Standards or other authorities in which case only accredited lab testing can be relied upon. Using an unaccredited lab or HPLC with limit of detection at 0.05% may not be good enough.


Accreditation is a sign of quality and reliability. The police, Trading Standards or other authorities are unlikely to view lab results from unaccredited lab as accurate. For this reason we use an accredited ISO 17025 lab running an accredited THC test – the highest standard globally.

Special Features

Accredited Lab

We offer CBD and THC testing at an accredited ISO 17025 analytical laboratory.

Accredited THC Test

Our THC test is highly sensitive and ISO 17025 accredited – equivalent to police THC test.

CBD Test Certificate

Get a Test Certificate with your CBD lab results to show customers.

FREE Regulatory Support

We provide regulatory support to help our clients comply with emerging CBD regulations in the UK and EU.

Fast & Reliable Service

We oversee the lab testing to ensure everything is in order and lab results are delivered on time.

CBD Lab Testing Services

Total CBD

Great if you just want to know CBD content



Accredited 17025 Lab


Results in 10 days


Test Certificate


Basic Regulatory Support Included

Total THC

Verify the THC content

Accredited THC & THCA Test


Accredited 17025 Lab


Results in 10 days


Test Certificate


Basic Regulatory Support Included


Identify multiple cannabinoids

Accredited THC, CBD, CBN & more…


Accredited 17025 Lab


Results in 10 days


Test Certificate


Basic Regulatory Support Included

How the service works:


  1. Complete the quote form here
  2. Make your payment and despatch samples to address below
  3. We will confirm receipt and forward samples to CBD testing lab
  4. A progress report is sent by email or text
  5. The lab results are released and a Test Certificate is sent
  6. We answer any questions you might have


Address to send samples:


Medic Pro Limited
(COVID: Due to office closure the sample dispatch address shall be confirmed at point of order)

More about the Regulatory Support 


Regulatory support is available to all clients that use our CBD testing service. Whether you have questions on CBD regulations in development, or the impact of Brexit, or you need help with preparing packaging we can offer support and advice:


  • Provide advice and opinion on the emerging CBD/cannabis regulation in the EU and regulatory pathways available including medicinal route and ‘Cannabis Product Directive‘ or ‘CPD’.
  • Provide practical advice on how to comply with regulations for oils, vape products and food that contain CBD including packaging advice for CBD products.
  • Respond on client’s behalf to letters from authorities such as Trading Standards and MHRA.
  • Advise on the potential impact of Brexit (March 2019) on regulation.


Note: Basic Regulatory support is limited to 30 min consultation. Some requests for support may be out of scope.

Fast & Reliable Service


We work to ensure the lab delivers the results consistently on time. From date of receipt of CBD samples you can expect the results in 7 days and a test certificate in 10. Results for bulk testing (5 samples or more) may take a little longer but we aim to get the results to you as fast as possible.

CBD Lab Testing Options

CBD Content

Our specialist CBD testing laboratory shall test for CBD content using state-of-the-art equipment and validated methods.

THC Potency

THC is a controlled substance and can only be present in CBD products in very low levels. Our THC test can quantify THC using highly sensitive, specialist equipment.


Impurities and contaminants are unavoidable in the manufacture of CBD products. Our CBD laboratory can test for heavy metals, residual solvents and other unwanted substances

Shelf life Testing

Over time the CBD content will decrease and so from a customer satisfaction perspective it is important to ensure marketed products have a CBD content that match the CBD label claim. In this context, we can undertake testing of CBD products to help you determine a shelf life.

Cannabinoid Testing


Of the reported 113 cannabinoids present in the Cannabis plant species including CBG, CBGVA, CBGM, CBC, CBCV CBCA, CBDA, CBDV, CBGA, CBL, CBV, THCA, CBE, CBT, THCV and CBN, the most well known are CBD and THC. While it is possible to test for multiple cannabinoids it can be costly and low cost testing may be limited in accuracy. In order to offer meaningful results to our clients we have focused on accurate CBD and THC testing.

Terpenoid Testing


Terpenes are aromatic chemicals that give cannabis its characteristic smell. They should only present in CBD products in very small quantities. We offer terpenes testing, however, given the cost of meaningful testing, we currently do not recommend testing for them and so are not a focus of the service.

Pesticide Screening


Like with many industrially grown crops, pesticides maybe used in the cultivation of Cannabis. From our research we understand that the quantities of pesticides found in finished product such as CBD oils are at trace levels. For this reason we believe there is no safety concern and so pesticide screening should not be a priority. We can arrange for testing if requested but we advise our clients to accept lab results on pesticide screening from the raw material supplier.

Microbial Testing


Organic material like plant extracts are vulnerable to attack by bacteria and fungi. It is our understanding that while we accept there is a risk of microbial growth in finished products, there is not enough evidence to suggest that this is a significant health concern. For this reason we advise our clients to accept the lab report or the certificate of analysis from the raw material supplier. On request, we can undertake microbial testing – which is part of a stability test (shelf life) – should you have any concerns.

Heavy Metal Testing


It is inevitable that in the manufacture of a product which requires the use of metal tools and machinery some metal contamination may be found in the finished product. While there is a risk that CBD products may contain trace levels, the risk is small and is typical of other food  products. We do not believe there is a particular safety concern of heavy metal contamination in CBD oils. We offer heavy metal testing, however, we recommend our clients to accept the heavy metal testing by the raw material supplier.

Residual Solvents


In order to extract CBD from the Cannabis plant solvents may be used. While a manufacturer may seek to rid the final product of harmful processing solvents, it is inevitable that a small amount is left behind. We believe that the quantity of residual solvents in CBD finished products is not a health concern. We can test for residual solvent, however, we recommend our clients to accept the residual solvent testing by the raw material supplier.




1. Do you test hemp CBD oil for CBD content?


Yes. The test certificate shall include test results for CBD content of a hemp CBD oil in units mg/ml and % w/w.


2. Do you conduct THC analysis?


Yes. THC analysis is included in the standard service. The lab report will verify whether or not the THC content is below the UK legal limit. To learn the actual quantity of THC, additional fees apply.


3. Do you conduct cannabis oil testing?


Yes. The laboratory is approved by the UK government to test cannabis oils. Note: Cannabis oil is not the same as CBD oil. Cannabis oils have higher levels of THC and require a medicinal licence.


4. What are the CBD testing standards and regulations?


Testing standards and regulations dedicated to CBD and cannabinoid-containing products are in development. Read more about the CBD regulations and laws in the UK here.

Information on CBD




CBD – or cannabidiol – is almost unique to the Cannabis plant species.




CBD Structure


Potential Health Benefits


Some of the possible therapeutic properties of CBD are listed below:

  • Parkinson’s disease
  • Alzheimer’s disease
  • Multiple Sclerosis
  • Huntington’s disease
  • Chronic Pain
  • Psychosis
  • Anxiety
  • Depression
  • Cancer
  • Inflammation
  • Infection




  • 2-[(1R,6R)-3-methyl-6-prop-1-en-2-ylcyclohex-2-en-1-yl]-5-pentylbenzene-1,3-diol
  • delta1(2)-trans-Cannabidiol
  • Epidiolex
  • (-)-trans-2-p-Mentha-1,8-dien-3-yl-5-pentylresorcinol


Registry Numbers


CAS number: 13956-29-1
EC / List no.: 689-176-3




Monkey: LD50 212 mg/kg


Chemistry of Cannabidiol


Molecular Formula: C21-H30-O2
Molecular Weight: 314.466
Melting point: 62-63°C
Solubility: approx. 23.6 mg/mL in DSMO and ethanol



Toxicity of short-term administration of cannabinoids to rhesus monkeys LINK

TOXNET: Cannabidiol

Cannabidiol: State of the art and new challenges for therapeutic applications: LINK


Related information


Cannabis Products Directive

CBD Regulations in the UK