Lessons from a review of thyroglobulin assays in the management of thyroid cancer

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Thyroglobulin (Tg) measurement has become increasingly an important and integral part of the follow up and management of patients with differentiated thyroid cancer. Clinicians predominantly rely on Tg for decision-making for surveillance of patients with differentiated thyroid cancer, but despite this new reliance, issues regarding Tg measurement have not been appropriately addressed especially within a local context. In the process of developing an institutional protocol we have identified that there are significant clinical and technical issues regarding Tg measurement, and surprisingly Tg assessment is currently not part of an external quality control programme. We conducted a small pilot study to specifically emphasize some of the assay issues. We aim to inform endocrinologists, pathologists and nuclear medicine physicians, the need and urgency for these issues to be addressed to improve the ongoing surveillance of differentiated thyroid cancer.

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