What's this test for?

This test is ideal if you're experiencing persistent fatigue, weakness, or unexplained tiredness that won't go away. It helps determine if you've had a past Epstein-Barr virus (EBV) infection, which is the virus that causes mononucleosis (mono). Many people use this test when they suspect a previous infection may be contributing to ongoing health issues or immune system concerns.

What happens after I get my results?

You'll receive detailed doctor notes in simple language explaining what your antibody results mean and whether they indicate a past EBV infection. These notes include personalized recommendations about managing fatigue, supporting your immune system, and whether further follow-up is needed. You'll also get the standard lab report and can track your antibody levels over time using our trends feature if you need to monitor your immune response.

What's included in this test?

This test measures IgG antibodies to the Epstein-Barr Virus Viral Capsid Antigen (VCA). This test measures IgG antibodies to the Epstein-Barr Virus Viral Capsid Antigen (VCA), which indicates whether you've been exposed to EBV in the past. The presence of these antibodies helps confirm previous infection and can provide insight into unexplained fatigue or immune-related symptoms. This test is particularly useful for understanding your infection history and ruling out active versus past EBV infection.

Who should consider getting this test?

This test is ideal for people who have experienced mononucleosis symptoms in the past or have persistent fatigue that may be related to a previous EBV infection. It's also useful for those who need to confirm their immune status for medical reasons, have chronic fatigue syndrome symptoms, or want to understand if past EBV exposure could be affecting their current health.

What symptoms indicate I may need this test?

Common symptoms that may prompt this test include persistent or recurring fatigue that doesn't improve with rest, a history of severe sore throat and swollen lymph nodes, ongoing weakness, or unexplained tiredness lasting for months. Some people also test when they've had mono-like symptoms and want to confirm if EBV was the cause, or if they're experiencing chronic immune system issues.

What is Epstein-Barr virus and why does it matter?

Epstein-Barr virus (EBV) is an extremely common virus that causes infectious mononucleosis (mono) and infects most people at some point in their lives. Once you're infected, the virus remains dormant in your body permanently, and your immune system keeps it under control through antibodies. Understanding your EBV status matters because past infection can sometimes be associated with persistent fatigue, and confirming exposure helps doctors rule out other causes of your symptoms.

What does a positive IgG result mean?

A positive IgG result means you've been infected with Epstein-Barr virus at some point in the past, which is very common—over 90% of adults have these antibodies. This indicates your immune system has encountered the virus and developed antibodies that remain for life. It doesn't mean you're currently sick, just that you've had the infection before, which is a normal and expected finding for most people.

What does a negative IgG result mean?

A negative IgG result means you likely haven't been infected with Epstein-Barr virus, which is less common in adults. This could mean you're one of the small percentage who hasn't encountered EBV yet, making you potentially susceptible to future infection. If you have current mono-like symptoms with a negative IgG, your doctor may recommend additional tests to check for acute infection.

How can I support my immune system after EBV infection?

Supporting your immune system involves prioritizing quality sleep of 7-9 hours nightly, managing stress through relaxation techniques or meditation, and eating a nutrient-rich diet with plenty of fruits, vegetables, and lean proteins. Regular moderate exercise can help boost immune function, while avoiding excessive alcohol and smoking supports overall health. Staying hydrated and considering supplements like vitamin D, vitamin C, and zinc may also help maintain strong immune defenses.

How often should I retest for EBV antibodies?

Since IgG antibodies remain in your body for life after EBV infection, routine retesting is usually not necessary unless you're monitoring immune status for specific medical reasons. If you have chronic fatigue syndrome or ongoing symptoms, your doctor may recommend periodic monitoring along with other immune markers. Retesting might be considered if you develop new symptoms or if your healthcare provider needs to distinguish between past and recent infection.

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.

EBV Antibody Test - Past Infection & Fatigue 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]

Blood Test for Epstein-Barr Virus and Persistent Fatigue

Epstein-Barr Virus Viral Capsid Antigen (VCA) Antibody (IgG)

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

What's this test for?

What's included in this test?

What happens after I get my results?

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

Blood Test for Epstein-Barr Virus and Persistent Fatigue

90 day happiness guarantee

Prescription & fees included

Easy to understand results

Fast & convenient

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