Description

A parvovirus B19 IgG and IgM test the cause of Fifth disease can determine if a person has been infected with parvovirus B19, or if they are immune:

  • Positive IgG and IgM: The person may have an active infection or have been recently infected.
  • Positive IgM only: The infection may be developing.
  • Positive IgG only: The person has been infected in the past and is now protected.
  • Negative IgG and IgM: The person has never been infected and is not protected. 

A parvovirus B19 IgG and IgM test may be ordered for:

  • Pregnant women who have been exposed to someone with parvovirus B19
  • People with acute or chronic anemia
  • People with persistent joint pain 

Fasting not required.