Phosphatidylethanol (peth)

Finger-prick blood
1 tests included
7 days turnaround


About Phosphatidylethanol (peth)

Change me!!!Phosphatidylethanol in Blood (PEth) is a stable, highly specific and sensitive marker for detecting chronic excessive drinking behaviour with a regular daily alcohol intake. PEth is found to be detectable in blood up to 28 days without alcohol. Sex, age, gender and body mass do not influence the normalisation rate of PEth. In comparison to serum CDT, PEth appears more sensitive. CDT is an indirect marker, PEth is a DIRECT marker. 99% clinical specificity when differentiating between abstainer and non-abstainer.

What's tested

Drug & Alcohol

How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.