Parvovirus B19 IgG details
What Parvovirus B19 IgG shows
This antibody indicates past exposure to parvovirus B19, the virus responsible for fifth disease (erythema infectiosum), a common, typically mild childhood illness causing a distinctive facial rash, though infection in adults can also cause joint pain. A positive IgG result indicates past infection and generally lifelong immunity. This is particularly relevant during pregnancy, since a new infection (rather than past immunity) carries a small risk of affecting the developing baby, which is why parvovirus testing is sometimes done if a pregnant woman is exposed or develops a suggestive rash or illness.
Tests that include Parvovirus B19 IgG
This test is used to help diagnose Parvovirus B19. Parvovirus B19 infection can be a life-threatening condition in patients with increased red cell destruction from other causes and in those unable to increase red cell production.
- Parvovirus B19 IgG Indicates past exposure to parvovirus B19, the virus that causes fifth disease.
- Parvovirus B19 IgM Indicates a recent or current parvovirus B19 infection (fifth disease).
This test is used to help diagnose Parvovirus B19. Parvovirus B19 infection can be a life-threatening condition in patients with increased red cell destruction from other causes and in those unable to increase red cell production.
- Parvovirus B19 IgG Indicates past exposure to parvovirus B19, the virus that causes fifth disease.
- Parvovirus B19 IgM Indicates a recent or current parvovirus B19 infection (fifth disease).
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