What it measures
Antibodies to the measles virus. IgG antibodies show past vaccination or infection and are used as a sign of immunity; IgM antibodies point to a recent infection.
Why people test it
- Checked to confirm immunity when vaccination records are missing or unclear.
- Asked for by some employers and courses, such as in healthcare.
- Checked before pregnancy, or after contact with someone who has measles.
Typical range
Reported as positive, negative or equivocal, often with a comment on immunity. Methods and cut-offs vary between labs, and your report shows how the lab reads the result.
Finger-prick or vein?
Offered as a vein draw only, often in a combined measles, mumps and rubella antibody test.