Laboratory: Clinical Biochemistry
Test Name:
Test Code: ATHG
Clinical Information:
Anti-TG testing is performed to rule out interference by Tg autoantibodies when measuring serum thyroglobulin levels. It is automatically performed on all specimens tested for thyroglobulin.
Patient Preparation: Biotin at high doses will interfere with some lab tests. No vitamins or dietary supplements containing biotin (vitamin B7) for at least 48 hours prior to specimen collection. Patients taking biotin doses over 100 mg/day may require a longer duration. Endocrine Practice 2017, 23 (8): 989 - 998
Collection Devices:
Li Heparin samples are NOT acceptable.
Specimen Required:

Serum: 2.0 mL

Stability 3 days refrigerated, 1 month frozen
Serum: 2.0 mL

Samples must be transferred to an aliquot tube and stored frozen if analysis will not be performed within 48 hours (#110-10-05 Serum/Plasma Separation Procedure & Transport)
Reference Values:
< 115 IU/mL
Anti-thyroglobulin (Anti-TG) levels are not performed when thyroglobulin levels are > 2000 μg/L.
See Also:
More Information: