Normal Reference Ranges
Adult
>= 10 (Immune) | < 10 (Non-immune) IU/mL
Pediatric
N/A IU/mL
Clinical Significance
Assesses immunity status. Essential during prenatal screening as rubella infection in pregnancy leads to congenital rubella syndrome.
Causes of High
- Immunity from MMR vaccination
- Past resolved rubella infection
Causes of Low
- Lack of immunity to rubella