1002. Thyroglobulin, antibodies (ATTG)
Description
Antibodies to thyroglobulin are proteins produced by the immune system in response to contact with thyroglobulin. Normally, thyroglobulin is isolated from immune cells. In certain conditions such as autoimmune diseases, trauma, or inflammation, this protective barrier breaks down, and the immune system starts to attack thyroglobulin, mistaking it for a foreign substance.
Measuring anti-thyroglobulin antibodies helps diagnose autoimmune thyroid disorders. This test is also used to monitor some forms of thyroid cancer after treatment, together with thyroglobulin levels. For a more complete evaluation, it is best performed alongside TG, TSH, free T4, and anti-TPO.
When and who needs the test?
- Diagnosis of autoimmune thyroid diseases
- Detection of recurrence after ablative therapy for differentiated thyroid cancer through combined testing with thyroglobulin
- Assessment of thyroid disease risk before starting treatment with amiodarone, interferon, or lithium
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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