{"id":"thyroglobulin-antibodies","name":"Thyroglobulin Antibodies","shortName":"TgAb","aliases":["TgAb","Thyroglobulin Antibody","Thyroglobulin Ab","Anti-Tg","Anti-Thyroglobulin","Anti-Thyroglobulin Antibody","Tg Ab","Anticuerpos antitiroglobulina","Antithyroglobulin Antibody","Anti-Thyroglobulin Ab","Thyroglobulin Autoantibodies","Thyroglobulin Antibodies","Thyroglobulin Antibody, Serum"],"abbreviations":["TgAb","Anti-Tg","Tg Ab"],"loinc":[{"code":"8098-6","primary":true},{"code":"56536-6","primary":false},{"code":"15210-8","primary":false}],"specimen":"serum-or-plasma","units":[{"ucum":"[IU]/mL","display":"IU/mL"},{"ucum":"k[IU]/L","display":"kIU/L"}],"referenceRanges":[{"population":"Adults","low":0,"high":4,"unit":"[IU]/mL","unitDisplay":"IU/mL","note":"ARUP prints 0.0 to 4.0 IU/mL (a result of 4.0 or less is negative) on a Beckman Coulter chemiluminescent immunoassay. Labcorp also uses a Beckman Coulter method but does not print a numeric interval on its test page. It reports any result above the assay's limit of detection as elevated, and describes an upper reference limit below 4 IU/mL in screened healthy people. Mayo Clinic Laboratories lists a stricter limit of under 1.8 IU/mL for all ages on an immunoenzymatic assay (a component of its heterophile-interference profile). Cutoffs are assay-specific and some major labs use lower ones, so this is the cutoff for a positive result on the ARUP method rather than a general range. Use the cutoff and flag printed on your own report.","sources":[{"title":"Thyroglobulin Antibody (test 0050105)","url":"https://ltd.aruplab.com/Tests/Pub/0050105","publisher":"ARUP Laboratories"},{"title":"Thyroglobulin Antibody (test 006685)","url":"https://www.labcorp.com/tests/006685/thyroglobulin-antibody","publisher":"Labcorp"}]}],"review":{"status":"ai-draft","label":"AI-drafted. Awaiting verification","lastReviewed":"2026-10-03"},"summary":"Antibodies aimed at thyroglobulin, a protein made in the thyroid. They are linked to autoimmune thyroid conditions and affect thyroglobulin testing.","url":"https://bloodtesttracker.com/markers/thyroglobulin-antibodies","notice":"Information, not medical advice. Ranges differ between labs, so the range on your own report is the one your result is judged against."}