Anti-thyroglobulin antibody test

A second kind of antibody against the thyroid.

€19.12. You pay at the desk, not online.

Anti-thyroglobulin antibody test: what it is for

Anti-thyroglobulin antibodies, often written TgAb or anti-Tg, are antibodies against thyroglobulin: the protein in which your thyroid stores its hormones. They are checked for two different reasons: to see whether there is an autoimmune thyroiditis, and to follow people treated for thyroid cancer.

When it is done

Doctors order them in two cases. The first is when they suspect Hashimoto’s thyroiditis, usually together with anti-TPO antibodies, which are more useful.

The second is after thyroid cancer. Here they are always measured together with thyroglobulin, because if they are present they can make it read lower than it is.

How the anti-thyroglobulin antibody test is done

It is a blood test, done at a Bianalisi lab without a prescription. You can add other tests to the same draw.

Questions about the anti-thyroglobulin antibody test.

Do I need to fast for the anti-thyroglobulin antibody test? It depends on the lab, and it is often done with other tests that need fasting. If you take biotin, the kind in hair, skin and nail supplements, ask your doctor whether to stop it at least two days before the draw, and tell the lab: it can skew the result.

How much does the anti-thyroglobulin antibody test cost? €19.12, from Bianalisi’s private list for Lombardy. You pay at the desk on the day of the draw, not online.

Do I need a prescription for the anti-thyroglobulin antibody test? No. You book it here without a prescription and pay at the Bianalisi desk.

When do results arrive? Within 10 working days, in the Rosa app, with each value next to the lab’s interval. The report a doctor approves is in the Rosa membership.