1003. Thyroglobulin (TG)
Description
Thyroglobulin (TG) is a protein produced by the thyroid gland and serves as a precursor for the thyroid hormones – thyroxine (T4) and triiodothyronine (T3).
Measuring thyroglobulin is important for monitoring treatment, detecting recurrence of thyroid cancer (ideally alongside thyroglobulin antibody testing), and determining the cause of thyroid dysfunction, including hyperthyroidism and hypothyroidism.
Thyroglobulin measurement is best combined with testing for thyroglobulin antibodies and other related thyroid function tests.
When and who needs the test?
- Detection of recurrence after thyroidectomy and radioactive iodine ablation in cases of differentiated thyroid cancer (DTC), when measured together with anti-thyroglobulin antibodies (anti-Tg).
- Population studies related to the assessment of iodine status.
Biological material
- Venous blood
Preparing for a blood test
In order to exclude factors that may affect the test results, we recommend to follow the preparation rules:
- an important condition for laboratory tests is to take blood on an empty stomach.
- 6-12 hours before the test, you should avoid eating, drinking alcohol, smoking, and limit physical activity. Drinking...
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