Cansford Labs - Pioneering drug and alcohol testing

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Cansford Labs - Pioneering drug and alcohol testing

PEth Blood Test

PEth is detectable in the bloodstream within 1 – 2 hours of alcohol use, and for 28 days afterwards.

You can be sure of a quick collection, rapid results, and a virtually painless collection method.

Our PEth testing can help to differentiate between excessive, moderate, and low alcohol consumption or abstinence.

What is PEth Testing?

Phosphatidylethanol (PEth) is a very specific alcohol biomarker and provides the highest sensitivity for the detection of current regular alcohol consumption. PEth testing is particularly effective for detecting chronic and heavy drinking where it is critical in settings such as the monitoring of medical professionals (such as nurses, dentists and doctors), plus child custody cases or drink driving violations. 

At Cansford Labs, PEth requires only a few drops of blood in the form of ‘dry blood spots’ that are taken for analysis at our laboratory. Known simply as ‘PEth’, this test offers a modern, sensitive alternative to traditional methods of blood testing for alcohol – and representative of alcohol use in the month prior to the sample collection.

Cansford delivers rapid, in house testing at our UK lab

At the forefront of Research and Development for drug and alcohol testing, we are the only UK laboratory to have invested in developing PEth testing in-house to provide a more accurate and less invasive form of blood testing of alcohol levels.

Because we carry out PEth testing ‘in-house’ Cansford is able to provide the same guarantee turnaround as our hair testing service – within three working days of receipt – meaning NO delays through the use of external labs. Most PEth testing is currently conducted in international laboratories.

As one of three providers of ‘in-house’ PEth testing in the UK (we were the first to introduce it), our laboratory can offer the same turnaround guarantee for combined PEth and hair testing and reporting.


Our promise regarding turnaround times and PEth Testing 

Cansford takes great pride in being recognised as the United Kingdom’s premier and fastest drug and alcohol laboratory testing service.

Our commitment to efficiency and reliability is underscored by our promise to deliver all test results within three working days from the moment we we receive samples at our UKAS-accredited laboratory.

We specialise in providing testing services for family law cases, child protection matters, addiction treatment centres, educational institutions, government bodies and agencies and workplaces.

Our test matrices include hair, nail, blood (including PEth) and oral fluid.

Cansford Laboratories is accredited with ISO 17025 for a highly accurate finger prick test for alcohol use

What you need to know about PEth Testing:

Detection window:

Approximately one month

Collection method:

Via a finger prick using a compact device, a convenient technique for collection, transport, and storage. A number of blood drops need to be collected in a specially designed collection kit.


PEth is more accurate, much easier to collect, yet no more expensive than traditional blood tests.


Alcohol testing a PEth blood sample provides a view of the last month of consumption. If for a longer period, a hair alcohol test can cover up to six months of consumption.

PEth enables the discrimination of heavy versus moderate or occasional drinkers, and can monitor abstinence within the past month. Age, gender, health or previous alcohol issues do not impact on the results.

Until recently, venous blood (obtained by venipuncture) measuring indirect markers; was the specimen of choice for measuring alcohol misuse. The indirect markers used can be subject to contributory factors, such as other medication used.


“Feedback overall is fantastic. From P**** who first took my call and understood how important it was time wise for me to have my test done, to the lady who came to do my test at my house. Results even came in 1 day earlier than requested. Faultless”

- Individual

“The office staff are professional, helpful and excellent at describing the process. The tester was lovely, professional and extremely knowledgeable. She ensured I was happy with each part of the process and my anxiety levels stayed low as a result of her being so calm and kind. Thank you.”

- Individual

“Great service, very informative staff, extremely understanding, patient and sympathetic towards sensitive family court issues and make every step clear and all questions answered in detail. Very quick turnaround time. Results back within 48 hours. Very well priced and don’t look to rip there (sic) customers off. I would only recommend Cansford for drug and alcohol testing regarding family and civil court matters.”

- Individual

“If I could give Cansford Laboratories more than 5 stars I would. I suffer from anxiety so phoning was a bit nervy for me but on talking on the phone & felt very relaxed & knew I was in good hands. Their prices was so affordable compared to other quotes I received. The process was unbelievable, the lady who came to my home was so friendly but still 100% professional and talked me through the process as I didn’t have a clue.”

- Individual