What's this test for?

This test is ideal if you're experiencing reactions like hives, rash, swelling, or breathing trouble after taking penicillin-based antibiotics. It checks whether your immune system has formed antibodies against penicilloyl G, the main allergy-triggering part of penicillin. This helps you understand if a past reaction may have been a true penicillin allergy.

What happens after I get my results?

Your results will show up in your account with a clear explanation of what a positive or negative result means. If your result is positive, a simple next step is to avoid penicillin-based antibiotics and let anyone administering medication know about your sensitivity. You can download a standard lab report from your account at any time, and if you're ever retested, the trends feature lets you track changes over time.

What symptoms indicate I may need this test?

Common signs include hives, itching, swelling of the lips or face, wheezing, or a widespread rash that showed up after taking penicillin or a related antibiotic. More severe symptoms like throat tightness, dizziness, or trouble breathing during or after taking the medication are also reasons to check. If you've ever had a serious reaction like this, seek medical care right away rather than waiting on test results.

How can I naturally support a healthy immune response?

While you can't change an existing allergy sensitivity through diet alone, supporting your overall immune balance can help your body respond better day to day. Eating a variety of whole foods, staying hydrated, getting enough sleep, and managing stress all help keep your immune system working well. Avoiding known triggers is still the most important step if you're sensitized to penicillin.

When will I get my results?

Results for this test are typically ready within about 7 days of your sample being processed at the lab. You'll get a notification once your report is available in your account. This turnaround gives the lab enough time to run the specific IgE antibody test accurately.

Who should consider this test?

This test is a good fit for anyone who has had a suspicious reaction after taking penicillin or a similar antibiotic and wants clarity before taking it again. It's also useful if you've been told you're 'allergic to penicillin' based on a childhood reaction you don't remember well. People who need antibiotics regularly and want to know their safe options may also benefit.

What is a penicillin allergy and why does it matter?

A penicillin allergy happens when your immune system mistakenly treats the antibiotic as a threat and creates IgE antibodies against it. This can cause anything from mild skin rashes to severe, dangerous reactions the next time you're exposed. Knowing your status matters because it affects which antibiotics are safe for you to use in the future.

What does a positive result mean?

A positive result means your body has made IgE antibodies against penicilloyl G, showing you're sensitized to penicillin. This doesn't automatically mean you'll have a severe reaction every time, but it does mean caution is needed around penicillin-based medications. Avoiding penicillin and telling anyone giving you medication about this result is a sensible precaution.

What does a negative result mean?

A negative result means no significant IgE antibodies to penicilloyl G were detected, which makes a true penicillin allergy less likely. However, it doesn't completely rule out allergy, especially if your past reaction was mild or happened a long time ago. If you still have concerns about a specific past reaction, keep track of your symptoms and circumstances for future reference.

How often should I retest?

Retesting isn't usually needed unless your symptoms change, you have a new suspected reaction, or a lot of time has passed since your last test, since allergy sensitivities can change over the years. Some people who were once sensitized actually lose that sensitivity over time. If you're unsure whether to retest, basing it on new symptoms or upcoming antibiotic needs is a practical approach.

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.

Penicillin Allergy Test - IgE Sensitization Check

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]