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Coffee allergy testing for people experiencing digestive issues and unexplained symptoms after drinking coffee

Coffee Sensitivity Test for Digestive Issues

Coffee (f221) IgG

Google
3,138 reviews
  • Identify potential coffee allergy reactions
  • Assess immune response to coffee proteins
  • Support digestive health and symptom tracking
First results as soon as overnight*

90 day happiness guarantee

We stand behind our service

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

90 day happiness guarantee

We stand behind our service

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

What's this test for?

This test is ideal if you're experiencing digestive issues, headaches, skin reactions, or other unexplained symptoms that seem to happen after drinking coffee. It measures your immune system's IgG response to coffee proteins, which can help identify if your body has developed a sensitivity or intolerance to coffee. Many people use this test when they suspect coffee might be causing their symptoms but want concrete answers before giving up their daily cup.

What's included in this test?

This test measures your IgG antibody levels specifically to coffee proteins (allergen f221). IgG antibodies are part of your immune system's delayed response, and elevated levels can indicate a food sensitivity that may be contributing to chronic digestive discomfort, inflammation, or other persistent symptoms. This measurement helps identify whether your body is mounting an immune response to coffee consumption.

What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining what your IgG response to coffee means for your digestive health and overall wellness. These notes include personalized recommendations like elimination diet guidance, alternative beverage suggestions, or ways to reduce symptoms if you continue drinking coffee. You'll also get the standard lab report and can track your antibody levels over time using our trends feature to see if your sensitivity improves with dietary changes.

When will I get my results?
Most results are typically available within 3-5 business days after your sample reaches the lab. You'll receive an email notification as soon as your results are ready to view in your secure online account. Complex antibody tests like IgG food sensitivity panels may occasionally take a bit longer to process than standard blood work.
Who should consider getting this test?
This test is ideal for anyone who experiences digestive issues like bloating, gas, or stomach discomfort after drinking coffee, or who has unexplained symptoms like headaches, fatigue, or skin problems that might be diet-related. It's also helpful for people with known food sensitivities who want to identify if coffee is a trigger, or anyone considering an elimination diet who wants data-driven guidance on what foods to avoid.
What symptoms indicate I may need this test?
Common symptoms that may indicate coffee sensitivity include digestive issues like bloating, gas, diarrhea, or stomach pain after drinking coffee. You might also experience headaches, fatigue, brain fog, skin rashes, joint pain, or general inflammation. If you notice these symptoms consistently after coffee consumption but they're not immediate allergic reactions, an IgG test can help identify if coffee is contributing to these delayed responses.
What does it mean if my IgG antibodies to coffee are high?
Elevated IgG antibodies to coffee suggest your immune system is reacting to coffee proteins, which can trigger inflammation and various symptoms like digestive discomfort, headaches, or fatigue. This doesn't mean you have a true coffee allergy, but rather a sensitivity or intolerance that may be contributing to chronic symptoms. Many people find their symptoms improve significantly when they eliminate or reduce coffee intake for several weeks.
How can I reduce coffee sensitivity naturally?
Start with a complete elimination of coffee for 4-6 weeks to allow your immune system to calm down and your gut to heal. Support gut health with probiotic-rich foods like yogurt, kefir, and fermented vegetables, and consider a high-quality probiotic supplement. After the elimination period, you might try reintroducing coffee slowly to see if symptoms return, or explore low-acid coffee alternatives and limit intake to small amounts if you do continue drinking it.
What is IgG food sensitivity testing and why does it matter?
IgG food sensitivity testing measures delayed immune reactions to specific foods, which are different from immediate IgE allergic reactions. While IgE allergies cause quick symptoms like hives or anaphylaxis, IgG reactions can take hours or days to appear, making them harder to identify without testing. Understanding your IgG responses helps pinpoint foods that may be causing chronic inflammation, digestive issues, or other persistent symptoms that affect your daily quality of life.
How often should I retest my coffee IgG levels?
If you have elevated IgG levels to coffee and eliminate it from your diet, consider retesting after 3-6 months to see if your antibody levels have decreased. Many people find their sensitivities improve after prolonged elimination and gut healing, potentially allowing them to reintroduce small amounts of coffee later. If your initial test shows normal levels but symptoms persist, you might retest annually or focus on testing other potential food triggers instead.
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.

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Instant orders, results often overnight*
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Demo results
Coffee IgG Antibody 3.2 U/mL
Demo results
Normal < 2.0 Elevated ≥ 2.0
3.2 U/mL

What this means

Your IgG antibody levels to coffee are elevated, suggesting your immune system is reacting to coffee proteins. This delayed immune response may be contributing to digestive discomfort, headaches, fatigue, or other symptoms you experience after drinking coffee. Many people find significant symptom relief when they eliminate coffee for several weeks.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More complex tests, such as hormone panels, may take up to 10–15 business days due to their complexity.
Here’s how easy it is to get blood work done on your terms
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Coffee Sensitivity Test for Digestive Issues

Google
3,138 reviews
  • Identify potential coffee allergy reactions
  • Assess immune response to coffee proteins
  • Support digestive health and symptom tracking

1,000,000+ blood tests later, here's what our customers say

Google reviews 3138 reviews Next
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.