Direct alcohol biomarker testing in Central London
PEth Alcohol Test in London
Assess alcohol consumption over approximately the previous three to four weeks.
Receive confidential, doctor-reviewed results within five to seven working days.
Book Your PEth Test Check whether PEth suits you
Assessment window
Approximately 3–4 weeks
Results
Usually 5–7 working days
Attendance
Walk-in after confirmation
What Is a PEth Alcohol Test?
PEth means phosphatidylethanol, a direct alcohol biomarker found in blood.
The body forms PEth when alcohol is present.
This relationship makes PEth useful for assessing recent alcohol consumption.
It offers a longer assessment period than standard alcohol tests.
Who Is This PEth Test For?
Personal Monitoring
Review recent drinking patterns using a direct alcohol marker.
Recovery Support
Provide objective information during supported alcohol reduction or abstinence.
Workplace Requirements
Suitable when an organisation specifically requests PEth testing.
Legal Requirements
May support cases requiring documented alcohol-marker results.
Always confirm the required test and reporting standard first.
What Does a PEth Result Show?
The laboratory measures phosphatidylethanol within your blood sample.
Detected PEth provides evidence that alcohol entered the body.
Higher concentrations generally reflect greater alcohol exposure.
However, PEth cannot calculate an exact number of consumed units.
Results require context and cannot independently diagnose alcohol dependence.
PEth, CDT or EtG: Which Test?
Choose the test matching the required assessment period.
| Test |
Typical period |
Sample |
Common purpose |
| PEth |
Approximately 3–4 weeks |
Blood |
Alcohol exposure over recent weeks |
| CDT |
Approximately 2–3 weeks |
Blood |
Sustained heavy drinking and DVLA preparation |
| Urine EtG |
Often around 24–72 hours |
Urine |
More recent alcohol exposure |
| Alcohol profile |
Several assessment periods |
Blood |
Broader alcohol and liver assessment |
Assessment periods vary with consumption, health and sample timing.
How Your London PEth Test Works
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Order online. Enter each client’s details securely within your cart.
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Await confirmation. We send attendance instructions by text and email.
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Attend Patient Reception. Bring your original passport or driving licence.
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Provide your blood sample. A trained phlebotomist completes collection.
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Receive your result. We email the doctor-reviewed report securely.
Attend Patient Reception in Central London
Address
The Doctors Laboratory
76 Wimpole Street
London W1G 9RT
Opening Hours
Monday–Friday: 7am–7pm
Saturday: 7am–1pm
Sunday: 8am–11am
Attendance
Walk in during opening hours after receiving confirmation.
Bring original photo identification. Phone images and photocopies are unacceptable.
Results and Turnaround
Results are usually available within five to seven working days.
Laboratory processing begins after your blood sample arrives.
Every report receives doctor review before secure email delivery.
Book early when working towards a legal or workplace deadline.
Why Choose Drug Test London?
Central London Testing
Attend conveniently at 76 Wimpole Street.
Accredited Laboratory
Testing uses UKAS-accredited The Doctors Laboratory.
Doctor-Reviewed Reports
A doctor reviews each report before release.
Established Service
We have streamlined private testing since 2015.
PEth Alcohol Test Questions
What does a PEth blood test show?
It measures a direct biomarker formed when alcohol enters the body.
How far back does PEth assess alcohol use?
PEth commonly reflects approximately the previous three to four weeks.
Can PEth calculate exactly how much I drank?
No. Results cannot precisely calculate consumed drinks or alcohol units.
Can one drink produce a positive PEth result?
Detection varies. No laboratory test can guarantee an individual outcome.
Is PEth suitable before a DVLA medical?
DVLA medicals commonly request CDT. Follow your official instructions before ordering.
Do I need an appointment?
No. Walk in after receiving your attendance confirmation.
Can I take the PEth test at home?
Yes. Choose the home PEth blood test.
Where can I learn more about PEth?
Read our detailed PEth alcohol testing guide.
Book Your PEth Alcohol Test Today
Order online and receive your London attendance confirmation.
Book Your PEth Test
