$70.00
Priced per marker, with baseline labs included. You’ll see your total before you pay.
Infectious disease
EBV early antigen antibody (IgG) test
Epstein-Barr virus antibody. Marker of active or recently active EBV infection; can be elevated in chronic active EBV.
At a glance
In about 5 days
Most results are ready in about 5 days. Some specialty markers can take up to 21 days.
Check before your draw
This marker has no preparation tag, but it can still need preparation. Contact us before your draw if you’re not sure.
Walk in at Quest
Your lab order arrives by email. Most Quest locations take walk-ins, so bring it with a photo ID.
What it measures
Epstein-Barr virus, or EBV, causes mono and stays in your body for life once you’ve had it. This test looks for antibodies, immune proteins, that tend to appear during an active or recent infection.
Why it matters for women
Most people catch EBV at some point, and mono can leave you tired for weeks or months. This test is read with other EBV antibody tests to help tell a recent infection from an old one. Long-lasting tiredness can have many sources, including low iron and thyroid problems, which are common in women, so this test is best read alongside others.
You might check it if…
- you’ve been tired for weeks with a sore throat or swollen glands
- a doctor is checking whether you’ve had mono recently
- a quick mono test was negative but mono still seems likely
What your result may mean
High EBV early antigen antibody (IgG): what it may mean
High or positive EBV early antigen D IgG may mean an active or recently reactivated Epstein-Barr virus (EBV) infection, the virus behind mono (infectious mononucleosis). These antibodies can appear during a new infection, and they can stay positive for years in some healthy people. A clinician may read this result with other EBV antibody tests to help tell a recent infection from an old one. Mono can bring weeks of tiredness, sore throat and swollen glands. Long-lasting tiredness can have many sources, including low iron and thyroid problems, so this result can't explain it alone.
Low EBV early antigen antibody (IgG): what it may mean
Low or negative EBV early antigen D IgG may mean there is no current EBV reactivation, though it can't rule out an active infection on its own. You may still have met the virus in the past, since most people catch EBV at some point, and this antibody can fade while others stay. Some people may not make this antibody even during mono. A clinician may check VCA and EBNA antibodies for the full timeline, and may look at your iron and thyroid results if tiredness continues.
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These notes provide context and do not diagnose a condition. Not yet available in NY, NJ, RI, HI, ND, SD or WV.