Discontinuation of Rubella and Measles Serology Tests
PCR is the preferred method for viral detection of rubella and measles. Throat or nasopharyngeal swabs are the ideal specimen and should be collected during initial investigation. Rubella virus may be detected from 1 week before to 2 weeks after rash onset. However, maximum viral shedding occurs up to day 4 after rash onset. Measles virus will be detected within three days of rash onset and up to ten days post rash onset. SHL offers measles PCR and can submit specimens for rubella testing to the CDC designated reference lab.