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Yeast IgE allergy test for people with food reactions or digestive symptoms

Yeast IgE Allergy Blood Test

Yeast (f45) IgE

  • Detect yeast allergy sensitivity signs
  • Screen recurring skin reaction causes
  • Assess digestive discomfort triggers
$44
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
LegitScript certified

Prescription & fees included

Go directly to the lab, no extra fees

Easy to understand results

With friendly doctor's notes & guidance

Fast & convenient

Lab visit as quick as 10 mins in & out

Prescription & fees included

Go directly to the lab, no extra fees

Easy to understand results

With friendly doctor's notes & guidance

Fast & convenient

Lab visit as quick as 10 mins in & out

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
LegitScript certified

What's this test for?

This test is ideal if you're experiencing hives, itching, digestive upset, or breathing trouble after eating foods or being around yeast-containing products. It checks whether your immune system has built up a specific allergic sensitivity to yeast. This can help you connect the dots between your symptoms and possible yeast exposure.

What happens after I get my results?

Your results will show up in your account along with an explanation of what the normal range means for this test. If your result is positive, a practical next step is to start noticing which foods or products containing yeast seem to trigger symptoms and consider limiting them. You can download a standard lab report from your account at any time, and if you retest later, the trends feature lets you see how your sensitization changes over time.

What symptoms indicate I may need this test?

Common signs include skin reactions like hives or eczema flare-ups, stomach issues such as bloating or discomfort after eating bread, beer, or fermented foods, and in some cases nasal congestion or breathing difficulty. If these symptoms show up repeatedly after eating yeast-containing foods or using products like some skincare items, it's worth checking. Keeping a symptom diary alongside this test can help you spot patterns.

When will I get my results?
Results are typically ready within about 7 days of your lab visit. You'll be notified as soon as they're available in your secure online account. This gives you time to plan any dietary or lifestyle adjustments once you know your results.
Who should consider this test?
Anyone who notices recurring skin, digestive, or respiratory symptoms after eating yeast-containing foods like bread, beer, or wine, or after using yeast-derived products, may want to consider this test. It's also useful for people trying to narrow down the cause of unexplained allergic-type reactions. This test simply checks for sensitization, so it's a good starting point rather than a final answer.
How can I naturally support a yeast sensitivity?
If you test positive, try reducing your intake of foods high in yeast, like bread, beer, wine, and some processed snacks, and see if your symptoms improve. Eating more whole, unprocessed foods and staying hydrated can also help support your body's overall balance. Some people find that probiotic-rich foods like plain yogurt help support gut health, though results vary from person to person.
What does a high (positive) IgE result mean?
A positive result means your immune system has produced antibodies that react to yeast, suggesting you're sensitized to it. This doesn't automatically mean you'll have a reaction every time you're exposed, but it raises the chances of symptoms after contact or ingestion. Pay attention to how your body responds around yeast-containing foods and products to see if there's a real-world connection.
What causes a positive yeast IgE result?
A positive result happens when your immune system mistakenly identifies proteins in yeast as harmful and creates antibodies against them. This can develop after repeated exposure to yeast in foods, beverages, or products over time. Genetics and having other allergies can also make someone more likely to develop this type of sensitization.
How often should I retest?
If you've made dietary changes or reduced your yeast exposure, retesting every 6-12 months can help you track whether your sensitization is changing. If your symptoms are stable and mild, testing once for a baseline may be enough. Use the trends feature in your account to easily compare results over time.
What should I do if my results are positive?
Start by keeping a log of foods and products containing yeast and note any symptoms that follow. Try gradually reducing your exposure to see if your symptoms improve, and read ingredient labels more carefully. If you ever experience severe symptoms like difficulty breathing or swelling, seek medical care right away.
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
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Demo results
Yeast (f45) IgE Negative
Demo results
Negative (Not Sensitized) Positive (Sensitized)
Negative

What this means

A negative result means no significant IgE antibodies to yeast were detected, so you're unlikely to be allergic to it. A positive result would mean your immune system has developed a sensitivity to yeast, which may explain skin, digestive, or breathing symptoms after exposure.

* 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
Choose a checkup
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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Yeast IgE Allergy Blood Test

  • Detect yeast allergy sensitivity signs
  • Screen recurring skin reaction causes
  • Assess digestive discomfort triggers
$44
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.