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Swordfish IgE allergy test for people with reactions after eating seafood

Swordfish Allergy Blood Test (IgE)

Swordfish (f312) IgE

  • Detect swordfish allergy trigger risk
  • Screen for seafood reaction causes
  • Assess immune sensitivity to fish
$49
First results as soon as overnight*

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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 experiencing itching, hives, swelling, stomach upset, or breathing trouble after eating swordfish or other fish. It checks whether your immune system has developed a specific antibody response (IgE) to swordfish, which is a sign of sensitization. It's a helpful first step if you suspect a fish allergy but aren't sure which fish is triggering your symptoms.

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 IgE result means. If your result is positive, a practical next step is to avoid swordfish and watch closely for symptoms after any accidental exposure; if you have a severe reaction like trouble breathing or swelling of the throat, seek medical care right away. You can download a standard lab report from your account at any time, and if you retest in the future, the trends feature lets you track changes in your IgE levels over time.

What is IgE and why does it matter?

IgE is an antibody your immune system makes when it mistakenly treats a harmless food protein, like the ones in swordfish, as a threat. When IgE levels to a specific allergen are high, it means your body is primed to react if you eat that food again. Understanding your IgE status helps you make informed choices about what to avoid and how closely to watch for symptoms.

When will I get my results?
Results 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, so you don't need to check back constantly. If you have ongoing symptoms in the meantime, it's a good idea to keep a food and symptom diary.
Who should consider this test?
This test is a good fit for anyone who has noticed hives, swelling, stomach issues, or breathing changes after eating swordfish or other seafood. It's also useful for people with a known fish allergy who want to confirm whether swordfish specifically is a trigger. Parents of children with suspected seafood sensitivities may also find this test helpful for identifying specific triggers.
What symptoms indicate I may need this test?
Common signs of a swordfish allergy include hives, itching, swelling of the lips or face, stomach cramps, nausea, vomiting, or trouble breathing shortly after eating fish. Some people also experience a runny nose, watery eyes, or a tingling sensation in the mouth. If these symptoms happen consistently after eating swordfish or other seafood, this test can help confirm whether IgE sensitization is involved.
How can I naturally support my immune system if I have food sensitivities?
While there's no natural remedy that removes a food allergy, you can support your overall immune balance by eating a varied, nutrient-rich diet, managing stress, and getting enough sleep. Some people find that reducing processed foods and adding more anti-inflammatory foods like leafy greens and omega-3-rich sources (other than the trigger fish) helps them feel better overall. Always avoid the specific allergen once it's identified, since diet changes alone won't prevent an allergic reaction.
What does a high (positive) IgE result mean?
A positive result means your immune system has produced antibodies against swordfish, indicating sensitization. This doesn't automatically mean you'll have a severe reaction every time, but it does mean exposure could trigger symptoms ranging from mild to serious. It's a signal to be cautious with swordfish and other similar fish, and to have a plan in place in case of accidental exposure.
What should I do if my results are positive?
If your result comes back positive, the most practical step is to avoid swordfish and read food labels carefully, since it can appear in dishes unexpectedly. Keep track of any reactions you have, including how severe they are, so you understand your personal risk level. If you ever experience severe symptoms like swelling of the throat or difficulty breathing, seek emergency medical care immediately.
How often should I retest?
There's no strict rule, but many people retest every year or two, especially if their symptoms change or they want to confirm whether sensitization has decreased over time. If you've had a significant reaction or your diet has changed a lot, retesting sooner can help you stay informed. Tracking your results over time using the trends feature can show you whether your IgE levels are rising, falling, or staying steady.
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.
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Get lab order in minutes, results come overnight*
Results explained in simple language
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Fast & confidential, we never sell or share your data
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Demo results
Swordfish (f312) IgE Positive (0.85 kU/L)
Demo results
Negative Positive
Positive (0.85 kU/L)

What this means

A positive result means your body has developed IgE antibodies to swordfish, indicating sensitization. This suggests you may experience allergic symptoms when eating swordfish, though reaction severity varies from person to person.

* 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
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Swordfish Allergy Blood Test (IgE)

  • Detect swordfish allergy trigger risk
  • Screen for seafood reaction causes
  • Assess immune sensitivity to fish
$49
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.