{"id":"rubella-igg","name":"Rubella IgG","shortName":"Rubella IgG","aliases":["Rubella Antibody IgG","Rubella Immunity","German Measles IgG","Rubella Immune Status","Rubéola IgG","Röteln-IgG","Rubella IgG (Immunity)","Rubella Antibodies, IgG","Rubella Virus Antibody IgG","Rubella Virus IgG","Rubella Immune Status IgG","Rubella IgG Antibody","Rubella Abs, IgG"],"abbreviations":["Rubella Ab IgG"],"loinc":[{"code":"5334-8","primary":true},{"code":"8014-3","primary":false},{"code":"25514-1","primary":false},{"code":"20458-6","primary":false}],"specimen":"serum","units":[{"ucum":"[IU]/mL","display":"IU/mL"}],"referenceRanges":[{"population":"Adults","low":10,"high":null,"unit":"[IU]/mL","unitDisplay":"IU/mL","note":"This is the antibody level most assays use as the cutoff for 'immune', not an interval from healthy people. A 2016 review says commercial assays use 10 IU/mL as the cutoff between immune and nonimmune, and also warns that being above or below it does not always mean protected or susceptible. ACIP (2013) accepts rubella-specific antibody above the positive cutoff for the assay as evidence of immunity. Cutoffs and equivocal zones are assay-specific, and some labs print an index instead of IU/mL (Labcorp: immune above 0.99, equivocal 0.90-0.99, non-immune below 0.90), which cannot be converted to IU/mL. Follow the label and cutoffs printed on your own report. This file treats 10 as included.","sources":[{"title":"Standardization of Assays That Detect Anti-Rubella Virus IgG Antibodies","url":"https://pmc.ncbi.nlm.nih.gov/articles/PMC4771216/","publisher":"Clinical Microbiology Reviews","year":2016},{"title":"Prevention of Measles, Rubella, Congenital Rubella Syndrome, and Mumps, 2013: Summary Recommendations of the Advisory Committee on Immunization Practices (ACIP)","url":"https://www.cdc.gov/mmwr/preview/mmwrhtml/rr6204a1.htm","publisher":"MMWR Recommendations and Reports (CDC)","year":2013},{"title":"Rubella Antibodies, IgG (test 006197)","url":"https://www.labcorp.com/tests/006197/rubella-antibodies-igg","publisher":"Labcorp"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Shows whether you have antibodies to the rubella (German measles) virus, from vaccination or past infection. Often checked before or early in pregnancy.","url":"https://bloodtesttracker.com/markers/rubella-igg","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}