What's this test for?

This test is ideal if you're checking for biotinidase deficiency, a rare inherited condition where the body can't properly recycle biotin (vitamin B7). It's especially useful for families with a history of the condition, or when a newborn screening result came back unclear and needs to be confirmed. Catching this early matters because the condition is very treatable once identified.

What's included in this test?

This test measures how well an enzyme called biotinidase is working in your body. This enzyme's job is to release biotin (vitamin B7) so your body can reuse it, and when it doesn't work properly, biotin can't be recycled, which can lead to serious health problems if untreated. Measuring enzyme activity levels helps determine whether the condition is present and how severe it may be.

What happens after I get my results?

Your results will show up in your account with the normal range clearly explained next to your value. If your result falls outside the normal range, the report will outline simple next steps, which may include starting a biotin supplement or repeating the test to confirm the finding. You can download a standard lab report anytime from your account, and if repeat testing is needed, the trends feature lets you track your results over time.

How can I naturally support healthy biotin levels?

If biotin recycling is a concern, eating biotin-rich foods like eggs, nuts, seeds, and leafy greens can help support your overall intake. However, if biotinidase deficiency is confirmed, diet alone usually isn't enough and a biotin supplement is typically needed. Always follow the specific guidance in your results report rather than relying on food sources alone for this condition.

When will I get my results?

Results are typically ready within about 7 days of your sample being tested at the lab. You'll get a notification as soon as your report is available in your account. This timeframe allows the lab to accurately measure enzyme activity levels.

Who should consider this test?

This test is a good option for parents who want to confirm or follow up on a newborn screening result, or for families with a known history of biotinidase deficiency. Adults or older children with unexplained symptoms like seizures, skin rashes, hair loss, or developmental delays may also want to check this. It's also useful if a sibling or relative has been diagnosed with the condition.

What symptoms indicate I may need this test?

Common signs of biotinidase deficiency include seizures, poor muscle tone, skin rashes, hair loss, and delayed development in infants and young children. Some people also experience hearing or vision problems if the condition goes untreated for a long time. If any of these symptoms are present, especially in a child, this test can help identify the underlying cause.

What does a low biotinidase result mean?

A low result means the enzyme isn't working as well as it should, which can range from partial to complete deficiency. This means your body has trouble releasing biotin for reuse, which can lead to symptoms like skin issues, seizures, or developmental delays if untreated. The good news is that this condition is very manageable with a daily biotin supplement once identified.

What causes low biotinidase activity?

Biotinidase deficiency is caused by an inherited genetic change passed down from parents, meaning both parents typically carry a copy of the altered gene. It's not caused by diet, lifestyle, or anything done during pregnancy. Because it's genetic, siblings of an affected child have a higher chance of also having the condition and may want to get tested.

What should I do if my results are abnormal?

If your result shows reduced enzyme activity, the report will explain the severity and suggested next steps, which often include starting biotin supplementation right away. Because untreated biotinidase deficiency can lead to serious symptoms over time, it's important to act on an abnormal result promptly rather than waiting. If symptoms are severe, such as ongoing seizures, seek medical care immediately.

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.

Biotinidase Test - Detect Biotin Deficiency Early

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]