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Anti-TPO antibodies are the most common anti-thyroid autoantibody, present in approximately 90% of Hashimoto's thyroiditis, 75% of Graves' disease and 10–20% of nodular goiter or thyroid carcinoma. Also, 10–15% of normal individuals can have high level anti-TPO antibody titres.
Anti-thyroglobulin antibodies are present in 1 in 10 normal individuals, and a greater percentage of patients with thyroid carcinoma. The presence of these antibodies can result in falsely low (or rarely falsely high) levels of reported thyroglobulin, a problem that can be somewhat circumvented by concomitant testing for the presence of ATAs.
Anti-thyroglobulin antibodies This page was last edited on 27 December 2019, at 18:13 (UTC). Text is available under the Creative Commons ...
In total, 20 of my biomarkers were out of range, and 85 were normal. I learned, for example, that my thyroglobulin antibodies (TgAb) were above range—“low-grade Hashimoto’s,” Hyman ...
Thyroid antibodies – both antithyroid peroxidase antibodies (anti-TPO, antithyroid microsomal antibodies, anti-M) and antithyroglobulin antibodies (anti-Tg) – in the disease are elevated, but their levels do not correlate with the severity. [citation needed]
The two antibodies most commonly implicated in autoimmune thyroiditis are thyroid peroxidase antibodies and thyroglobulin antibodies. [5] They are hypothesized to develop as a result of thyroid damage, where T-lymphocytes are sensitized to residual thyroid peroxidase and thyroglobulin, rather than as the cause of thyroid damage. [ 5 ]
Reference ranges often depend on the analytical method used, for reasons such as inaccuracy, lack of standardisation, lack of certified reference material and differing antibody reactivity. [11] Also, reference ranges may be inaccurate when the reference groups used to establish the ranges are small. [12]
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