What's this test for?

This test is ideal if you're currently receiving lidocaine treatment and need to confirm your body has a safe, effective amount of the drug in your system. It's often used after a heart event or heart surgery, or if you're getting lidocaine for pain control, to make sure the dose is working without becoming risky. If you've noticed unusual symptoms like dizziness, ringing in your ears, or an irregular heartbeat while on lidocaine, this test can help clarify what's going on.

What happens after I get my results?

Your lidocaine level will show up in your account along with the normal therapeutic range, so you can see exactly where your result falls. If your level is within range, no action may be needed beyond continuing your current care plan and retesting as advised; if it's too high or too low, this is worth addressing promptly since lidocaine has a narrow safety window. A full, downloadable lab report is available in your account, and you can track your levels over time using the trends feature to see how they change with dosing or timing.

Who should consider this test?

Anyone currently being treated with lidocaine for a heart rhythm problem, recovering from open-heart surgery, or receiving it for anesthesia purposes should consider checking their levels. It's especially useful if you've had a dose change recently or if you're experiencing symptoms that might signal too much or too little of the drug in your system. People with liver or kidney issues, which can affect how the body clears lidocaine, may also benefit from more frequent checks.

What symptoms indicate I may need this test?

Watch for signs like drowsiness, confusion, numbness around the mouth, ringing in the ears, blurred vision, muscle twitching, or a slow or irregular heartbeat. These can point to lidocaine levels that are too high. On the other hand, if the arrhythmia or pain you're being treated for isn't improving, your level might be too low, which is also worth checking.

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 as soon as your report is available, and you can log into your account to view the full breakdown at any time.

What is lidocaine and why does it matter?

Lidocaine is a medication used to calm irregular heartbeats and to numb areas of the body for pain relief. It works well, but the difference between a helpful dose and a harmful one can be small, which is why keeping an eye on blood levels matters. Testing helps confirm you're getting the benefit of the drug without tipping into unsafe territory.

What does high lidocaine mean?

A high result means there's more of the drug in your bloodstream than is considered safe, which raises the risk of side effects like confusion, seizures, or heart rhythm problems. This can happen from receiving too high a dose, getting it too quickly, or if your liver isn't clearing it efficiently. If your level comes back high, especially alongside symptoms like severe dizziness or an irregular heartbeat, seek medical care right away.

What does low lidocaine mean?

A low result means there may not be enough of the drug in your system to control the arrhythmia or provide the pain relief it's meant to. This could be due to the dose being too small, the timing of your last dose relative to the blood draw, or your body processing it faster than expected. Retesting after a dose adjustment can help confirm you're back in the effective range.

What causes abnormal lidocaine levels?

Levels can run high if the dose is too strong, given too fast, or if liver function is reduced since the liver is responsible for breaking the drug down. Levels can run low if a dose is missed, given too slowly, or if the body metabolizes it more quickly than average. Other medications and overall health conditions like heart or liver disease can also shift how lidocaine behaves in your body.

How often should I retest?

Retesting frequency depends on how and why you're receiving lidocaine, but it's common to check levels after any dose change, when new symptoms appear, or on a schedule set as part of your treatment plan. Regular monitoring during ongoing treatment helps catch shifts in your levels before they become a problem. Tracking your results over time makes it easier to spot patterns and stay in the safe, effective range.

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.

Lidocaine Blood Test - Monitor Drug Safety Levels

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

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