Other names: EBV NUCLEAR AG (EBNA) AB (IGG)
Optimal Result:
0 - 18 U/mL.
EBNA-1 IgG is a blood test that measures IgG antibodies your immune system makes against the Epstein–Barr virus (EBV) nuclear antigen. These antibodies don’t show up right away. They usually appear weeks to a few months after a first (primary) EBV infection and then stay in your body for life. Because of this, EBNA-1 IgG is a marker of past EBV infection, not of current illness.
Modern labs usually measure EBNA-1 IgG specifically. Some older or specialty tests may report other EBNA targets, but interpretation is similar. Always review your own lab’s report.
To help tell the difference between recent/acute EBV infection and a past infection (when combined with VCA IgM and VCA IgG, and sometimes EA-D IgG or EBV DNA PCR).
To check prior EBV exposure, for example before an organ transplant.
To clarify mixed or confusing results, such as positive VCA IgG with ongoing symptoms.
Always compare your results to the reference range on your report, and remember this test works best when viewed together with VCA IgM, VCA IgG, symptoms, and timing.
Negative (Non-reactive) EBNA-1 IgG
In someone with recent mono-like symptoms: a negative EBNA-1 IgG test supports a recent primary infection, if VCA IgM and VCA IgG are positive. The body hasn’t made EBNA antibodies yet.
Negative results can also mean you’ve never been exposed to EBV.
About 5–10% of people who had EBV in the past will never develop measurable EBNA-1 IgG. This means a negative result doesn’t always rule out prior infection.
Positive (Reactive) EBNA-1 IgG
Shows you’ve had EBV in the past.
Stays positive for life in most people, even when you feel well.
By itself, a positive EBNA-1 IgG does not mean you currently have an active infection.
Here’s how doctors usually interpret EBV antibodies:
| Pattern | VCA IgM | VCA IgG | EBNA-1 IgG | What it usually means |
|---|---|---|---|---|
| Early/acute infection | + | + | − | Recent/acute EBV infection |
| Past infection | − | + | + | Previous exposure, not active |
| Very early window | − | − | − | Before antibodies develop – retest if symptoms continue |
| Possible reactivation* | ± | + | + | May suggest EBV reactivation if symptoms or PCR confirm |
* Reactivation requires supportive symptoms or additional labs. EBNA-1 IgG alone does not prove reactivation.
Sample: Blood (serum).
Fasting: Not needed.
Timing matters: Testing too early may show EBNA-1 IgG negative, even if infection is present. Retesting after 1–2 weeks often gives a clearer result.
Testing very early (before antibodies develop).
Weak antibody responses in people who are immunosuppressed.
Lab-to-lab differences in assay type and cut-offs.
Small group of EBNA-1 “non-responders” who never develop this antibody despite past exposure.
You feel well and EBNA-1 IgG is positive: This usually means past infection; no treatment is needed.
You have mono-like symptoms and EBNA-1 IgG is negative: Ask your doctor about VCA IgM/VCA IgG, and possibly EA-D IgG or EBV DNA PCR. Repeat testing may be needed.
Mixed or unclear results: Retest in 1–2 weeks, or ask about EBV PCR, especially if you’re immunocompromised.
EBNA-1 IgG appears later after EBV infection and usually lasts for life.
A positive result = past EBV infection.
A negative result = no prior infection, or possibly very recent infection before EBNA antibodies appear.
For accurate interpretation, EBNA-1 IgG should always be read together with VCA IgM, VCA IgG, symptoms, and timing.
Disclaimer: This information is for educational purposes only. Always discuss your lab results with your healthcare provider, who can interpret them in the context of your symptoms, timing, and medical history.
A positive EBNA-1 IgG usually means you’ve had Epstein–Barr virus (EBV) in the past. EBNA-1 IgG appears weeks to a few months after the first infection and then persists for life, so a “positive” EBNA-1 IgG by itself does not indicate an active infection or reactivation. Antibody tests like this are generally interpreted as positive/negative, not “elevated/low,” and numbers above the cutoff don’t correlate with how sick you are.
How clinicians interpret a positive EBNA-1 IgG (context matters)
Past infection (most common): VCA IgM (−) + VCA IgG (+) + EBNA-1 IgG (+) → prior exposure; not acute.
Recent/acute infection less likely: If you currently have mono-like symptoms, a pattern of VCA IgM (+) + VCA IgG (+) with EBNA-1 IgG (−) fits better with a recent infection (EBNA hasn’t developed yet).
Possible reactivation: Consider only when symptoms or immune status suggest it, and when other tests (e.g., EA-D IgG, EBV DNA PCR) support ongoing activity. EBNA-1 IgG alone cannot prove reactivation.
What to do next
If you feel well: a positive EBNA-1 IgG simply documents past EBV—no treatment is needed.
If you have current symptoms (fatigue, fever, sore throat, swollen nodes): ask for the full EBV panel (VCA IgM, VCA IgG, ± EA-D IgG) and consider EBV DNA PCR if the diagnosis is uncertain.
If results seem inconsistent with your symptoms or timing: repeat testing in 1–2 weeks can clarify the pattern.
Remember: cutoffs vary by lab—always interpret your result using the reference range on your report and with your clinician’s guidance.
Key point: A positive EBNA-1 IgG nearly always reflects past infection, not something that needs treatment now. It’s the pattern with VCA IgM/VCA IgG (and sometimes EA-D IgG or PCR) that tells whether infection is recent, reactivated, or simply remote.
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Our database covers over 10,000 biomarkers with clear, simple explanations—so you can finally understand your results and what to do next.
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Enter Your Lab Reports — Always Free
If you'd like to handle inputting your health data into your account, you can do so with our easy-to-use data entry forms. Our user-friendly form is designed to guide you through the quick and easy submission process, making it simple to keep track of your health metrics. This is available to both Complete plan and Unlimited plan members.
Our user-friendly form guides you through a quick, simple submission process, making it easy to enter your health metrics.
Add your results anytime with our easy entry form. It's quick, guided, and helps you stay organized — free for all members.
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View your lab data through easy-to-read graphs and tables. Quickly spot patterns, track changes, and compare results across different dates — all without digging through multiple reports. You can also select and compare graphs of specific biomarkers side-by-side to better understand how they relate and change over time.
See your lab reports in clear graphs and tables. Spot patterns, track changes, and compare results over time — all in one place.
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Export Your Complete Lab History
After collecting lab results from different providers, you can download your entire history combined into a single file. Choose from PDF, Excel, or CSV formats to easily review, share, or get a second opinion—no more juggling multiple reports.
After collecting lab results from different providers, you can download your entire history combined into a single file.
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Data Entry Service for Your Reports
Our inclusive service handles the data entry for your lab reports. Just submit your information and we'll take care of the rest. Complete plan members receive one report entered for free, then $15 per report after that. Unlimited plan members receive ten report entries for free, then $15 per report after that.
Our inclusive service handles the data entry for your lab reports. Just submit your information and we'll take care of the rest.
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Whether you're working with a doctor, nutritionist, caregiver, or wellness coach, you can securely share your complete lab history by sending an invite link to anyone you trust. You have full control over who sees your information and for how long, ensuring your privacy and peace of mind at every step.
Share your full lab history with your doctor, nutritionist, or coach using a secure invite link.
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As a PRO member and medical practitioner, Healthmatters.io has been an invaluable tool for tracking my clients' data. The layout is intuitive, making it easy to monitor trends and spot patterns over time. The ability to customize reports and charts helps me present information clearly to my clients, improving communication and outcomes. It's streamlined my workflow, saving me time and providing insights at a glance. Highly recommended for any practitioner looking for a comprehensive and user-friendly solution to track patient labs!
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Healthmatters is a personal health dashboard that helps you organize and understand your lab results. It collects and displays your medical test data from any lab in one secure, easy-to-use platform.
With a Healthmatters account, you can:
Professionals can also analyze client data more efficiently and save time managing lab reports.
Healthmatters.io personal account provides in-depth research on 4000+ biomarkers, including information and suggestions for test panels such as, but not limited to:
You can combine all test reports inside your Healthmatters account and keep them in one place. It gives you an excellent overview of all your health data. Once you retest, you can add new results and compare them.
If you are still determining whether Healthmatters support your lab results, the rule is that if you can test it, you can upload it to Healthmatters.
While we work with many popular labs, we welcome reports from lots of other places too.
It's as simple as this: if you can get a test done, you can upload it to Healthmatters and we can interpret results from any lab out there. If laboratories can analyze it, we can interpret it.
If you're on the hunt for a specific biomarker, contact us and we'll add it to our database. Anything from blood, urine, saliva, or stool can be uploaded, understood, and tracked with your Healthmatters account.
The Complete Plan ($15/month) is perfect for individuals who want ongoing access to their health data. It includes unlimited lab imports, visual tracking, custom ranges, result explanations, full account exports, and secure sharing — all with a simple monthly subscription. You can cancel anytime and restart your plan whenever you're ready — your data will still be there waiting for you. You can also upgrade to the Unlimited Plan at any time, with the cost prorated based on what you've already paid.
The Unlimited Plan ($250 one-time) is also designed for individuals but offers lifetime access with no ongoing subscription. You'll get all the same features as the Complete Plan, plus a larger initial data entry allowance (10 reports), making it a great choice if you prefer a one-time payment and long-term use without monthly fees.
In short:
There are two ways to add your test reports to your Healthmatters account. One option is to input the data using the data entry forms. The other method is to utilize our "Data entry service."
Our data entry forms offer an easy, fast, and free way for you to input the reports yourself. Self-entry allows you to add an unlimited number of reports at no cost. We make the self-entry process user-friendly, providing dozens of templates that pre-populate the most popular laboratory panels and offering instant feedback on entered values.
For those who prefer assistance, we offer a "Data entry service" to help you input your data. Simply attach an image or file of your lab test results, and a qualified team member from our data entry team will add the results for you.
We support various file types, including PDFs, JPGs, or Excel. This service is particularly useful if you have many reports to upload or if you're too busy to handle the data entry yourself.
Our Data Entry Service is for when you don't want to manually type in your lab results yourself. You simply upload your report (PDF, image, or screenshot), and our trained team enters the information into your Healthmatters account for you — accurately and neatly organized, ready to view in graphs, tables, and timelines.
The $15 per report covers the time and care it takes for a real person to review your file, make sure each result is entered correctly, and double-check for accuracy. This ensures your health data is precise and easy to work with — without you having to spend the time doing it yourself.
Prefer to do it yourself? You can always use our free self-entry tool to add results manually — it just takes a bit more time and attention.
For users on the Complete monthly plan, the first report is entered free of charge, and each additional report incurs a fee of $15.
Unlimited account holders enjoy the entry of ten reports without charge. Subsequent reports are subject to a $15 fee per report.
Additionally, users on the Complete plan can upgrade to a yearly subscription from the account settings. The annual subscription includes a data entry service for five reports.
All professional accounts allow you to import and onboard an unlimited number of clients and their lab results. The distinction between professional plans lies solely in the data entry service.
The Pro Monthly Plus plan is priced at $75 per month and includes a data entry service for five reports each month. Additional reports can be self-entered at no extra cost or, if preferred, you can use our data entry service for an additional fee of $15 per report.
The Pro Monthly plan is priced at $45 per month and does not include a data entry service. Self-entry is free for an unlimited number of reports, and you can opt for the data entry service at a fee of $15 per report.
You also have the option to upgrade to higher monthly or to annual plans, which come with substantial discounts. All upgrades can be done directly from your account.
Simply log in and navigate to your account settings to cancel your subscription. Scroll down to locate the 'Cancel' button at the bottom of the page. Ensure you cancel at least one day before the renewal date to prevent any charges. Once cancellation is requested, the subscription remains active until the conclusion of the current billing cycle.
Our goal has been to make your Healthmatters account as intuitive as possible.
We've crafted multiple ways for you to navigate your data, whether you're glancing at a single report or delving into your historical test reports.
1. Graph View:Dive into a visual journey with our biomarker graphs, showcasing over 40 data points. Combining years of results unveils trends, empowering you to make informed decisions. Our visualization tools make it a breeze to compare and understand changes over time, even if your results are from different labs. A search function and filters simplify the exploration of extensive data, allowing you to focus on what needs attention.
2. All Tests ViewExplore neatly organized reports on a timeline, highlighting crucial details like dates, critical results, and lab/panel names. Each report opens up to reveal in-depth descriptions and additional recommendations for each biomarker. The history of previous results is just a click away, and you can download a comprehensive report for deeper insights. Color-coded and user-friendly, it's designed for easy reading, understanding, and navigation.
3. Table View:For a holistic view of all biomarkers side by side, our table view is your go-to. Results are neatly displayed in a categorized and dated table, ideal for those with an extensive test history. Utilize sorting, filters, and color-coding to enhance your analysis and gain extra insights.
Yes, you can download your information anytime. We offer two easy ways to export your lab data:
This makes it simple to save, back up, or share your health data whenever you need.
Yes, you can print your report. To do so, navigate to "All tests" and open the report you wish to print. You'll find a print button in the right corner of the report. Click on it, and your browser's print window will open. If you prefer to print in a bigger typeface, adjust the scale using the print window settings.
Yes, you can! We highly recommend activating Two-Factor Authentication (2FA) for your account. To do so, please navigate to the "Profile and Security" section of your account, where you will find instructions for activating 2FA.
Yes, you can. When entering values for the biomarker, you will see an "Edit Range" button. Click this button, and you'll have the option to enter a custom range.
A personal account is all about keeping your own lab test results in check. It's just for you and your personal use.
The professional account is designed for health professionals who wish to track and organize their clients' laboratory results.
To learn more about Healthmatters Pro, please refer to the professional page.
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