Epstein-Barr Virus Viral Capsid Antigen (VCA) Antibody (IgG)
Antibody markers that tell apart recent, past, and never-exposed Epstein-Barr virus infection.
Consider this test if:
- Prolonged fatigue, sore throat, fever, or swollen glands suggesting mononucleosis
- Sorting out whether a current illness is a new EBV infection or an old one
- Confirming past exposure and immune memory before or after a known mono episode
- Establishing EBV status when symptoms are ambiguous and earlier testing was inconclusive
- HSA/FSA eligible
- Results delivered to your dashboard · Reviewed by a real clinician
- Drawn at a CLIA/CAP-accredited lab near you ·
Pre-test considerations
No fasting required and timing of day does not matter. Because antibody levels shift over the course of infection, the stage of illness affects interpretation; testing very early may miss antibodies that have not yet risen, so repeat testing weeks later is sometimes needed to clarify the pattern.
Video consult with your Care Team
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What this test is for
Epstein-Barr virus (EBV) is the common cause of infectious mononucleosis and infects most people by adulthood, often without symptoms. This test reads the antibodies that mark where you are in an EBV infection: VCA IgM rises first and fades within weeks to a few months, VCA IgG appears early and persists for life, and EBNA IgG shows up months into recovery and stays for life. Together they distinguish a current or recent infection from a past one or from no prior exposure, which is the usual question when mono-like illness brings fatigue, sore throat, swollen lymph nodes, and fever. Timing matters for interpretation, since a single marker in isolation can be misleading early in the illness.
What to expect
- 1 Book instantly
Click, book, done. Choose a convenient lab location near you. Transparent, up-front pricing.
- 2 Quick lab visit
Testing to fit your busy schedule, usually 15 minutes or less. Walk-in and appointments available.
- 3 Fast, dashboard-delivered results
Your results post straight to your dashboard as soon as the lab completes them.
- 4 Expert guidance
Included with Mito membership. A clinician reviews your results and your personalized action plan follows, with clear next steps.
Everything your health needs,
in one membership
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Every test at our cost
Members pay our cost on every test, with lab fees passed straight through. The full receipt is itemized, never padded.
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Continuous tracking, all in one place
Upload past labs and watch your trends over time. Every marker and visit lives in one longitudinal record, so all your care stays together.
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Year-round clinician support
Text anytime and get clinician-reviewed answers. When you want to go deeper, 1:1 consultations are available at affordable rates.
All for $9/month
Order any test or consult without joining. For $9/month, members unlock member prices, trend tracking, and year-round clinician guidance.
Mito Membership
$9 /mo
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Without membership
$0
pay as you go
At-cost pricing on labs, scans, and more
Priority turnaround on your results
On-demand clinician consults when you need guidance
Personalized action plans across supplements, exercise, nutrition, and sleep
AI health coaching to help you act on your results
Year-round medical support, with in-chat clinician escalation
All your health records in one personal vault, with trends and biological age tracking
Early access to new diagnostics and product releases
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Frequently asked questions
View all FAQsHow does pricing work?
Every test shows the member price next to the standard non-member price, so you can see what membership saves you. The member price is our cost — covering the lab and what it takes to run the service — never a profit on the test itself; Mito makes its money on the $9 membership, not on marking up your tests. Membership is $9/mo, and you still pay the lab’s order fee. Prices are itemized before you pay, with no hidden fees.
Where do I get tested?
Choose a partner lab (Quest, Labcorp, or BioReference) at checkout. If your cart spans multiple tests, we consolidate the whole order onto a single lab so you only make one visit.
Is this eligible for HSA/FSA?
Yes. This test is HSA/FSA eligible, and you can pay with your HSA/FSA card at checkout.
When will I get my results?
Your results post to your dashboard once your lab completes them, then a clinician reviews them and your full analysis and personalized action plan (with clear next steps) follow. Turnaround varies by test: specialty assays and at-home kits take longer, and each test shows its expected turnaround before you buy.
Do I need a doctor’s order?
No. Mito provides the lab order for you, so you can book and get tested without a separate doctor visit.
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