Thyroglobulin antibodies (anti-TG)
Detect thyroid autoimmunity and protect your thyroid health.
What’s tested
Pick a time
Thyroglobulin antibodies (anti-TG) are autoantibodies directed against thyroglobulin, a protein produced by the thyroid gland that serves as a precursor for thyroid hormone synthesis. The presence of these antibodies indicates an autoimmune response against the thyroid and is commonly associated with conditions such as Hashimoto's thyroiditis, Graves' disease, and other autoimmune thyroid disorders. This test is suitable for individuals with symptoms of thyroid dysfunction (fatigue, weight changes, temperature sensitivity, hair thinning), those with a family history of autoimmune thyroid disease, or patients being investigated for an underlying autoimmune cause of thyroid imbalance. It is frequently requested alongside thyroid function tests and other thyroid autoantibody markers to provide a comprehensive picture of thyroid health.
Thyroid Autoantibodies
- Thyroglobulin antibodies (TG Ab): Detects and measures autoantibodies directed against thyroglobulin. Elevated levels suggest an autoimmune process affecting the thyroid and can be present in Hashimoto's thyroiditis, Graves' disease, and occasionally in other autoimmune conditions or in healthy individuals. Results should be interpreted in the context of thyroid function tests and clinical presentation.
Why it matters
Identifying thyroglobulin antibodies helps clinicians confirm or exclude autoimmune thyroid disease, which is a leading cause of thyroid dysfunction. Early detection supports appropriate monitoring and management, reducing the risk of untreated thyroid disorders and their impact on metabolism, energy, fertility, and overall wellbeing.
No special fasting required. Drink plenty of water prior to your appointment for a smooth blood draw.
- Identification: Photo ID (Passport or Driving Licence) is only required if you need your report for official, employment, visa/travel, premarital, or Identity-Verified Certificate (IVS) purposes (not required for personal health & wellness testing).
This test provides an official, quality-assured laboratory report with reference ranges. These results are for clinical information and do not replace your GP or consultant. Always discuss abnormal results with your GP or specialist in the context of your medical history.
WhatsApp →
