Could a nodule make my thyroid levels appear normal?

I am having a partial thyroidectomy due to a 5.3 cm nodule on my left lobe. They did a biopsy it was non malignant. I had blood work done but I dont go back to see the endocrinologist until the end of the month. By thyroid levels appear to be normal, tsh 1.39 t4 free 1.3 and t3 free 2.8, however my thyroid peroxidase antibodies is at 350 and Thyroglobulin antibodies is at 33. This makes me believe Hashimoto thyroiitisI have all the symptoms of Hypothyroidism. Could the nodule be producing thyroid hormone to make my levels appear normal? Also could this all be affecting my blood pressure?

Age: 34
Medications: None

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Dr. Javez Ernesto
7:54 pm

Hashimoto’s and Hypothyroidism are 2 different conditions. Hashimoto’s is an autoimmune disease. Hypothyroidism is a clinical state based on laboratory reference ranges. It is possible to have Hashimoto’s (confirmed with abnormal antibodies) for up to 10 years while still having normal TSH, T4, T3 levels.

Dr.Honey Arora
9:41 am

Hi.. Thanks for the query.. Thyroid peroxidase is an enzyme normally found in the thyroid gland, plays an important role in the production of thyroid hormones. A TPO test detects antibodies against TPO in the blood. If you’ve been diagnosed with thyroid disease, your doctor may recommend a TPO antibody test — in addition to other thyroid tests — to help determine the cause. The presence of TPO antibodies in your blood suggests that the cause of thyroid disease is an autoimmune disorder, such as Hashimoto’s disease or Graves’ disease. In autoimmune disorders, your immune system makes antibodies that mistakenly… Read more »