What is a normal thyroglobulin antibody level?
The short answer
A typical US lab calls thyroglobulin antibodies normal up to 4 IU/mL. That range exists to catch disease, not to describe your best.
Nobody we follow has said what your thyroglobulin antibodies should be. It comes up on the shows, but never with a number.
What thyroglobulin antibodies measures
Antibodies against a protein your thyroid uses to build its hormones.
They point to an autoimmune process in the thyroid.
Common questions
What is a normal thyroglobulin antibodies level?
Most US labs print 0–4 IU/mL. Your report grades you against that range. It exists to catch disease, not to describe your best.
What does your thyroglobulin antibodies number mean?
On a typical lab range, up to 4 IU/mL is normal and over 4 is high. Your own report prints its range next to your number, and that is the one your lab uses. Nobody we follow has drawn a line inside that range.
What does the thyroglobulin antibodies test measure?
Antibodies against a protein your thyroid uses to build its hormones. They point to an autoimmune process in the thyroid.
Why is there no target here?
Because nobody we follow has named a number for thyroglobulin antibodies. If that changes, it will be here.