What's this test for?

This test is ideal if you're preparing for an organ or tissue transplant and need to check for antibodies that could cause your body to reject donor tissue. It's also useful if you've had a previous transplant, blood transfusion, or pregnancy, since these can trigger the immune system to develop antibodies against specific tissue markers. Identifying these antibodies ahead of time helps determine compatibility with potential donors.

What's included in this test?

This test looks for antibodies against Class I tissue markers, which are proteins found on almost all cells in your body. Detecting these antibodies matters because they can attack donor organ or tissue cells, leading to rejection after a transplant. Knowing which specific antibodies are present helps match you with a more compatible donor.

What happens after I get my results?

Your results will show up in your account along with a clear explanation of what a positive or negative antibody finding means. If antibodies are detected, next steps typically involve further compatibility testing or discussing timing with a transplant program before moving forward. You can download a standard lab report anytime from your account, and if you test again in the future, the trends feature lets you compare results side by side.

How can I naturally support immune balance?

While you can't change antibody levels through lifestyle alone, keeping your immune system balanced can support overall health during the transplant process. Eating a nutrient-rich diet, staying hydrated, getting consistent sleep, and avoiding unnecessary infections can help your body stay in the best shape possible. Avoiding smoking and excess alcohol is also recommended since both can stress the immune system further.

When will I get my results?

Results are typically ready within about 7 days of your sample being processed at the lab. This timeframe allows for the detailed antibody analysis required for this specialized test. You'll get a notification as soon as your results are available in your account.

Who should consider this test?

This test is a good fit for anyone on a transplant waiting list, anyone being evaluated as a potential organ or tissue donor, or anyone who has had a prior transplant, transfusion, or pregnancy and needs compatibility screening. It's also relevant if a previous transplant showed signs of rejection and the cause needs to be investigated.

What symptoms indicate I may need this test?

Unlike many blood tests, this one isn't ordered based on symptoms you feel day to day. Instead, it's used proactively before a transplant or after signs of organ rejection, such as unexplained fever, pain near a transplanted organ, or reduced organ function noticed through other testing. If you're experiencing any of these after a transplant, this test can help identify the cause.

What does a positive antibody result mean?

A positive result means your immune system has developed antibodies that recognize certain tissue markers as foreign, which raises the risk of rejecting a donor organ with matching markers. This doesn't mean a transplant is impossible, but it does mean more careful donor matching is needed. The report will detail which specific antibodies were found so this information can guide next steps.

What causes these antibodies to develop?

These antibodies commonly form after exposure to foreign tissue, which happens during pregnancy, blood transfusions, or a previous transplant. Your immune system reacts to these exposures the same way it would to any foreign substance, building a memory of it. This is why people with more of these exposures tend to have a higher chance of testing positive.

How often should I retest?

Retesting frequency depends on your individual transplant timeline, but many people on a waiting list are retested periodically, such as every few months, since antibody levels can change over time. If you experience a new triggering event, like a transfusion, retesting sooner is a good idea. Your transplant program's typical schedule can guide exactly when your next test should happen.

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.

HLA Class I Antibody Test - Transplant Matching

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]