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Carbamazepine drug level test for patients managing seizure disorder medication

Carbamazepine Drug Level Blood Test

Carbamazepine and Metabolite, Free/Bound/Total

  • Monitor seizure medication dosage levels
  • Check medication effectiveness and safety balance
  • Track drug levels over time
$450
First results as soon as overnight*

All results normal? Get your money back. First-time customers only. File a support ticket titled “Money Back Guarantee” with your order number within 15 days of receiving your results. STD, Sickle Cell, and gift orders aren’t eligible. Full terms apply. guarantee
No questions asked refunds
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Prescription & all lab fees included

Go directly to the lab, no extra fees

Doctor's guidance included

Easy to understand results

Fast & convenient

Lab visit as quick as 10 mins in & out

  • Many results come back overnight *
  • 90-day money back guarantee
  • Save time & skip the doctor’s office
  • Lab visit as quick as 10 minutes
  • Results explained, with clear next steps
  • LegitScript certified
  • No questions asked refunds
  • The price you see is the price you pay
  • Many results come back overnight *
  • 90-day money back guarantee
  • Save time & skip the doctor’s office
  • Lab visit as quick as 10 minutes
  • Results explained, with clear next steps
  • LegitScript certified
  • No questions asked refunds
  • The price you see is the price you pay

What's this test for?

This test is ideal if you're taking carbamazepine to control seizures and need to make sure your dose is working correctly. It helps if you have concerns about the medication not controlling your seizures well, or if you're experiencing side effects that might mean your levels are too high. It's also useful if you take other anticonvulsant medications, since these can change how your body processes carbamazepine.

What's included in this test?

This test measures carbamazepine and its active metabolite in both free (unbound) and total (bound plus unbound) forms. Looking at the free and bound levels together matters because only the free portion of the drug is active in your body, so this gives a more complete picture of how the medication is actually working for you.

What happens after I get my results?

Your results will show up in your account with each value's normal range clearly explained, so you can see if your carbamazepine and metabolite levels fall within the therapeutic window. If a level looks too high or too low, simple next steps include reviewing your dosing timing and consistency, and retesting to confirm the trend before making any changes. You can download the standard lab report directly from your account at any time. Over time, you can use the trends feature to track how your levels shift and stay stable on your treatment plan.

How can I naturally support seizure control?
While medication levels should never be adjusted without proper guidance, some everyday habits can support overall seizure management. Getting consistent, adequate sleep, managing stress, staying hydrated, and avoiding alcohol can all help reduce seizure triggers. Taking your medication at the same time every day also helps keep drug levels steady.
When will I get my results?
Results are typically ready within about 7 days of your lab visit. Once ready, you'll be able to view them securely in your online account and download a copy of the full lab report.
Who should consider this test?
This test is a good fit for anyone currently prescribed carbamazepine for seizure control, especially if you've recently started the medication, changed your dose, or added another anticonvulsant. It's also useful if you've noticed new symptoms like dizziness, blurred vision, or drowsiness that could signal your levels are too high.
What symptoms indicate I may need this test?
Signs that it might be time to check your carbamazepine levels include breakthrough seizures, unusual drowsiness, dizziness, blurred or double vision, nausea, or unsteady walking. Any noticeable change in how well your seizures are controlled is also a good reason to check your levels.
What is carbamazepine monitoring and why does it matter?
Carbamazepine monitoring means checking the amount of medication and its metabolite in your blood to make sure it's in the range that controls seizures without causing side effects. Because everybody processes this medication a bit differently, and other medications can change how it's broken down, regular monitoring helps keep your treatment both safe and effective.
What does a high carbamazepine level mean?
A high level can mean the medication is building up in your body more than expected, which raises the risk of side effects like drowsiness, dizziness, or blurred vision. This can happen from a dose that's too high for your body or from other medications slowing down how carbamazepine is cleared. If you have symptoms along with a high result, cut back on activities like driving until you feel steady and seek medical care if symptoms are severe.
What does a low carbamazepine level mean?
A low level may mean the medication isn't reaching a strong enough amount in your blood to fully control seizures, which raises the risk of breakthrough seizures. This can happen if doses are missed, taken inconsistently, or if another medication is speeding up how quickly your body clears carbamazepine. Keeping a consistent dosing schedule and retesting can help confirm whether this is an ongoing pattern.
How’s this work?
Getting your blood test with us is easy, private & backed by the power of science.

Long story short:
  1. In the test options, use the filters or search box to narrow your choices and find the test you want.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.
  7. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
  8. If you have any questions, please text us at 754-799-7833 or email [email protected] 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 [email protected], and we'll gladly help you. We've got your back and reply quickly.
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 [email protected]. 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 [email protected].
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 [email protected].

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 [email protected] and we'll gladly help you.

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

You get clinical lab reports & simplified health insights.
Save time & gas, go straight to the lab. Our doctors cover the rest.
Results start landing the next day after your lab visit.*
We don’t sell or share your data. Your time & privacy matter.
US-licensed doctors have your back if things get unclear.
No hidden fees, nice discounts for regular checkups.
Save a trip to the doctor, go directly to the lab
Get lab order in minutes, results come overnight*
Results explained in simple language
Reviewed by US licensed doctors
Fast & confidential, we never sell or share your data
No insurance needed, transparent pricing
Demo results
Carbamazepine, Total 9.5 mcg/mL
Demo results
Low (<4 mcg/mL) Therapeutic (4-12 mcg/mL) High (>12 mcg/mL)
9.5 mcg/mL

What this means

This result falls within the typical therapeutic range for seizure control. Levels in this range are generally associated with effective seizure management and a lower risk of side effects.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More advanced tests may take longer due to complexity.
Here’s how easy it is to get blood work done on your terms
Choose a checkup
Order your test Save a trip to the doctor. Your results will come with clear, friendly explanations. Takes 2 minutes
Book a lab
Book an appointment Visit any of our 4,000 nearby lab locations to have your samples collected. Book or walk-in
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Get results Receive a clear, easy-to-digest health report by email & SMS within a few business days. Get answers, fast

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Carbamazepine Drug Level Blood Test

  • Monitor seizure medication dosage levels
  • Check medication effectiveness and safety balance
  • Track drug levels over time
$450
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.
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For informational purposes only. Not medical advice.