{"id":"tetanus-igg","name":"Tetanus antitoxoid IgG","shortName":"Tetanus IgG","aliases":["Tetanus Antibody","Tetanus Toxoid IgG","Tetanus Immunity","Tetanus Antitoxoid","Tetanus Antibody, IgG","Tetanus Toxoid Antibody","Tetanus Toxin Antibody","Tetanus Antitoxin IgG","Tetanus Antitoxin","Tetanus Immune Status","Anti-Tetanus Toxoid IgG","Clostridium tetani Toxoid IgG","Tetanus Toxoid IgG Antibody","Tetanus Vaccine Response","Tetanus Ab IgG"],"abbreviations":["Tetanus IgG","Anti-TT IgG","Anti-tetanus IgG"],"loinc":[{"code":"53935-3","primary":true},{"code":"32775-9","primary":false},{"code":"41483-9","primary":false},{"code":"49191-0","primary":false}],"specimen":"serum","units":[{"ucum":"[IU]/mL","display":"IU/mL"},{"ucum":"m[IU]/mL","display":"mIU/mL"}],"referenceRanges":[{"population":"Adults","low":0.1,"high":null,"unit":"[IU]/mL","unitDisplay":"IU/mL","note":"This is a protective-level cutoff, not the central 95% of a healthy population. Quest reports 0.10 IU/mL or higher as protective. ARUP says a concentration above 0.1 IU/mL is usually considered protective. Quest adds that tetanus can still occur in some people with levels at or above this cutoff.","sources":[{"title":"Tetanus Antitoxoid (test code 4862)","url":"https://testdirectory.questdiagnostics.com/test/test-detail/4862/tetanus-antitoxoid?cc=MASTER","publisher":"Quest Diagnostics"},{"title":"Tetanus Antibody, IgG (test 0050535)","url":"https://ltd.aruplab.com/Tests/Pub/0050535","publisher":"ARUP Laboratories"}]}],"review":{"status":"ai-verified","label":"AI-verified against cited sources. Awaiting expert review","lastReviewed":"2026-10-03"},"summary":"Measures antibodies against the tetanus toxin to show whether vaccination still gives you protection.","url":"https://bloodtesttracker.com/markers/tetanus-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."}