{"id":"anti-ssb-la","name":"Anti-SSB/La Antibody","shortName":"Anti-SSB/La","aliases":["SS-B Antibody","La Antibody","Sjogren's Antibody (SS-B)","SSB Antibody","Anti-SSB","Sjogrens Syndrome-B Ab","Anti-La","La (SS-B) Antibody","SSB (La) (ENA) Antibody, IgG","SSB/La Antibody","La/SSB Antibody","Anti-La/SSB","Anti-SSB/La","SS-B (La) Antibody IgG","ENA SSB (La) Ab","La Antibody IgG","Sjogren's Syndrome B Antibody"],"abbreviations":["SSB","SS-B","Anti-La","Anti-SSB"],"loinc":[{"code":"29965-1","primary":true},{"code":"17791-5","primary":false},{"code":"33613-1","primary":false},{"code":"45142-7","primary":false}],"specimen":"serum","units":[{"ucum":"[arb'U]/mL","display":"AU/mL"}],"referenceRanges":[{"population":"Adults","low":0,"high":40,"unit":"[arb'U]/mL","unitDisplay":"AU/mL","note":"ARUP Laboratories multiplex bead assay, reported in AU/mL (arbitrary units), with a reference interval of 40 or less. ARUP reads 29 or less as negative, 30 to 40 as equivocal and 41 or more as positive. Units and cutoffs are specific to each kit and are not interchangeable (other labs report antibody index or chemiluminescent units with different cutoffs), so use the cutoff and flag printed on your own report.","sources":[{"title":"SSB (La) (ENA) Antibody, IgG (test 0050692)","url":"https://ltd.aruplab.com/Tests/Pub/0050692","publisher":"ARUP Laboratories"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Looks for antibodies to La (SSB), which often appear together with anti-Ro. They are linked to Sjögren's disease and lupus and matter for pregnancy planning.","url":"https://bloodtesttracker.com/markers/anti-ssb-la","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}