🚗🍷 PEth Test and Drink Driving: A Key Element for Your Defence Before the Police Court

The PEth test (Phosphatidylethanol) has become an important tool in drink-driving cases.
Beyond the medical examination required to recover a driving licence, it can also be a strategic asset for your defence before the police court.

Understanding its role allows you to adopt the right strategy from the beginning of the procedure.

🧪 1) What is the PEth test?

PEth is a blood biomarker that detects alcohol consumption over a period of approximately 2 to 4 weeks.

Unlike a standard breath or blood alcohol test:

• it does not measure a single moment,

• it evaluates drinking behaviour over time.

It can indicate:

• ✅ abstinence,

• ⚠️ regular consumption,

• ❗ heavy or chronic consumption.

⚖️ 2) Why can PEth help before the police court?

When someone is prosecuted for drink driving, the court does not only assess the offence itself.

The judge also considers:

• the risk of reoffending,

• the defendant’s attitude,

• the efforts made since the incident,

• the awareness of the seriousness of the situation.

A favourable PEth result can demonstrate:

• abstinence since the offence,

• a change in behaviour,

• the absence of problematic alcohol use,

• a responsible attitude.

➡️ It is an objective medical element, which can be particularly persuasive for the court.

📉 3) What impact can it have on the judge’s decision?

Depending on the circumstances, a PEth test may help to:

• reduce the length of the driving disqualification,

• limit additional measures,

• obtain a more proportionate penalty,

• strengthen the defendant’s credibility at the hearing.

💡 The message to the court is clear: the offence is taken seriously and concrete steps have been taken to prevent any recurrence.

⏳ 4) When should the test be carried out?

PEth reflects alcohol consumption over several weeks.

To be useful in legal proceedings:

• it should be carried out after a sufficient period of abstinence,

• ideally before the hearing,

• in a recognised laboratory.

⚠️ A few days of abstinence is generally insufficient.

🛠️ 5) Part of an overall defence strategy

The PEth test is most effective when it forms part of a consistent approach, such as:

• medical follow-up or specialist consultation,

• supporting medical certificates,

• explanations regarding the circumstances of the offence,

• a clear commitment to behavioural change.

The objective is to show:

• awareness of the seriousness of the facts,

• a responsible attitude,

• a low risk of reoffending.

🔄 6) Also useful for recovering your driving licence

Independently of the court procedure, a PEth test is often required during the medical fitness assessment following a driving ban.

Anticipating the test helps to avoid:

• a negative fitness decision,

• additional delays,

• repeated testing.

📌 Key points

• The PEth test analyses alcohol consumption over several weeks.

• In drink-driving cases, it can be an important element of defence before the police court.

• A favourable result demonstrates real behavioural change and reduces the perceived risk of reoffending.

• Proper preparation significantly increases the chances of success, both legally and for licence recovery.

📞 Need assistance?

A drink-driving procedure can have significant consequences for your driving licence and your professional life. Contact me for personalised advice and a defence tailored to your situation.