Use

The Quantitative Thyroglobulin without Thyroglobulin Antibodies test is used primarily to monitor treatment effectiveness and detect recurrence in well‑differentiated thyroid cancers (e.g., papillary and follicular). By excluding antibody interference, it offers more accurate measurement of thyroglobulin levels as a tumor marker. Monitoring is especially critical post‑thyroidectomy or therapy to detect residual or recurrent disease. (Derived from Ulta Lab Tests process description and general clinical context.)