What if my thyroid antibody tests are negative?
Negative results mean that no antibodies against TPO, Tg, or TSH were found. You likely don’t have a problem with your thyroid. If your results show antibodies against TPO or Tg, you may have Hashimoto thyroiditis. If your results show antibodies against TSH receptor, you may have Graves’ disease.
What is a normal thyroglobulin antibody result?
TgAb levels below 20 IU/mL are typically considered normal for the general population (those without any thyroid issues).
What does low thyroglobulin levels mean?
If thyroglobulin levels stay the same or increase after treatment, it may mean there are still thyroid cancer cells in the body. If thyroglobulin levels decrease or disappear after treatment, it may mean there are no normal or cancerous thyroid cells left in the body.
Can you have thyroid antibodies and not have Hashimoto’s?
Having only the TPO antibodies present with normal TSH and free T4 levels means that your thyroid is functioning normally and you don’t have hypothyroidism, but it does mean that you may have Hashimoto’s disease. Remember that Hashimoto’s doesn’t always cause hypothyroidism.
What does a thyroglobulin of 0.1 mean?
The investigators found that when the basal thyroglobulin level under thyroid hormone suppression therapy is <0.1 ng/ml, it accurately predicts that the stimulated thyroglobulin level will be <1, which indicates absence of residual cancer cells.
What is thyroglobulin antibody test for?
A thyroglobulin antibody test is used to determine if you have an underlying thyroid issue. The thyroid gland is a butterfly-shaped organ at the base of the front of your neck. It creates essential hormones for the body to function correctly.
What blood test shows Hashimoto?
Anti-thyroid antibodies (ATA) tests, such as the microsomal antibody test (also known as thyroid peroxidase antibody test) and the anti-thyroglobulin antibody test, are commonly used to detect the presence of Hashimoto’s thyroiditis.
What level of thyroglobulin is considered undetectable?
If your thyroglobulin range is “undetectable” (at UHN this means it is less than 0.9 Micrograms per Litre (ug/L) or below 5ug/L, and your thyroglobulin antibodies are normal, there is likely no normal thyroid tissue and no cancerous tissue found.
What level should thyroglobulin?
The normal value for thyroglobulin is 3 to 40 nanograms per milliliter in a healthy patient. If a patient’s thyroglobulin level is found to be increasing after all of the thyroid gland has been removed, the patient may have a recurrence of a differentiated thyroid cancer.
What does low thyroglobulin antibodies mean?
If thyroglobulin levels decrease or disappear after treatment, it may mean there are no normal or cancerous thyroid cells left in the body.