What's this test for?

This test is ideal if you're trying to understand or document your recent alcohol use, whether for personal health tracking, a legal requirement, or a workplace program. It's also useful if you're cutting back on drinking and want an objective way to see if your efforts are working. Unlike tests that only catch very recent drinking, this one can pick up patterns from the past couple of weeks.

What's included in this test?

This test measures Phosphatidylethanol (PEth), a marker that forms in your blood only when alcohol is present, making it one of the most reliable ways to detect drinking over recent days to weeks. Because it reflects an average of your alcohol intake rather than a single drink, it gives a clearer picture of ongoing habits than tests that only catch same-day use.

What happens after I get my results?

Your results show up in your account with the PEth value clearly explained alongside the normal reference range, so you know exactly where you stand. If your level suggests heavier drinking than expected, simple next steps include reducing or pausing alcohol intake and retesting in a few weeks to track the change. You can download a standard lab report straight from your account at any time, and the trends feature lets you compare results over multiple tests to see your progress over time.

How can I naturally support liver and alcohol recovery?

Cutting back or pausing alcohol entirely is the most effective step, since your body needs time without alcohol to clear PEth and recover. Staying well hydrated, eating a balanced diet rich in vegetables and lean protein, and getting regular sleep can help support your liver as it resets. Light exercise and stress management techniques like walking or breathing exercises can also reduce the urge to drink.

When will I get my results?

Results are typically ready within about 7 days of your sample being processed at the lab. You'll get a notification and can log into your account to view the details as soon as they're available. No need to call or wait on hold — everything is accessible online.

Who should consider this test?

This test is a good fit for anyone who wants an objective, private way to track alcohol consumption over time — whether you're monitoring your own drinking habits, meeting a program requirement, or simply curious about how recent drinking shows up in your bloodwork. It's especially useful for people who've been cutting back and want proof of progress, or for those who need documentation covering a period of days to weeks rather than just a single occasion.

What symptoms indicate I may need this test?

You might consider this test if you've noticed increased tolerance to alcohol, trouble cutting back despite wanting to, or physical signs like disrupted sleep, fatigue, or stomach issues that seem tied to drinking. It's also relevant if you're being asked to verify a period of abstinence or reduced drinking for personal, legal, or workplace reasons. If you're unsure whether your drinking has become a concern, this test provides objective data rather than relying on memory or self-report.

What does a high PEth result mean?

A high PEth level means there's evidence of significant alcohol consumption over the past one to two weeks — the higher the number, the heavier or more frequent the drinking is estimated to have been. This isn't about a single drink; it reflects a build-up pattern in your blood. If your result is higher than expected, consider reducing your alcohol intake and retesting in a few weeks to see if the level comes down.

What causes a high or low PEth result?

A high result is caused by regular or heavy alcohol consumption in the days to weeks before your blood draw, since PEth only forms when ethanol is present in your system. A low or undetectable result generally means little to no alcohol was consumed in that window, though very light or occasional drinking may also show as low. Because PEth clears from the blood gradually, timing your test relative to your last drink matters for accurate results.

How often should I retest?

If you're actively working to reduce or stop drinking, retesting every 2-4 weeks can help you track meaningful changes, since PEth takes time to clear from your blood after you cut back. For ongoing monitoring or documentation purposes, follow whatever schedule your specific program or personal goal requires. Spacing tests too closely may not show a noticeable difference, since PEth reflects a rolling window of recent drinking.

Getting your blood test with us is easy, private & backed by the power of science.Long story short: In the test options, use the filters or search box to narrow your choices and find the test you want. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy! If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.

How do I know which test to get?

In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option. Just text or call us at 754-799-7833, email us at support@privatemdlabs.com, and we'll gladly help you. We've got your back and reply quickly.

When will my lab results be available?

Most test results will be available within 1–3 business days. Once they're ready, we'll send an email and text message to let you know. After your blood draw, just hang tight and don't worry – we'll keep you updated and in the loop! If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com, and we'll gladly help you.

Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?

Absolutely! We totally understand that errors can happen. No worries, we're here to help you. Just reach out to us via text at 754-799-7833 or shoot us an email at support@privatemdlabs.com. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you. There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out. Our lab requires an address to be listed to generate an order.

Do you accept health insurance?

Only HSA & FSA is accepted. Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts. This policy applies to all insurance companies, including federal health insurance programs like Medicare. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com.

Can I cancel my order?

Yes. We get it – sometimes your needs change. As long as your samples haven’t been collected yet, we’re happy to help you cancel your order. If you have any further questions, please text us at 754-799-7833 or email support@privatemdlabs.com. You can read more about our cancellation policy here.

How can I find a lab location near me?

During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp). Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym. If you have any questions, please text us at 754-799-7833 or email support@privatemdlabs.com and we'll gladly help you.

PEth Alcohol Test - Detect Recent Drinking Patterns

Getting your blood test with us is easy, private & backed by the power of science.

Long story short:

In the test options, use the filters or search box to narrow your choices and find the test you want.
If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!

754-799-7833

[email protected]

Phosphatidylethanol (PEth) Alcohol Monitoring Blood Test

Drug Monitoring, Phosphatidylethanol (PEth), Blood

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

What's this test for?

What's included in this test?

What happens after I get my results?

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

Find a lab near you

Phosphatidylethanol (PEth) Alcohol Monitoring Blood Test

Prescription & all lab fees included

Doctor's guidance included

Fast & convenient

1,000,000+ blood tests later, here's what our customers say