Normal TSH but elevated Thyroid Peroxidase?

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I've been struggling with fatigue, sensitivity to the cold, headaches, dry skin, and poor gut health (loosely diagnosed as IBS) for nearly two years. Finally, my doctor ordered thyroid blood tests. She said everything was normal but my THYROID PEROXIDASE was elevated and has ordered a thyroid ultrasound. I am 21, female, Grave's Disease in my family.

She was initially skeptical when I brought up Hashimoto's, but the peroxidase is elevated which said is "abnormal" and she's "concerned." She also said no one knows what causes this (genetics or viral infections) and it may not be autoimmune thyroiditis but she wants the ultrasound and also said it may cause problems down the line.

What is she investigating? Does this sound like HASHIMOTO'S? She says I don't need to go on hormones.

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    Hi, an ultrasound scan of the thyroid can be used for example to check its volume and if there are any nodules present. An enlarged thyroid could indicate some level of inflammation.

    From what you wrote above, it sounds as if your thyroid hormone levels are within a normal range but your TPO antibody level is raised.

    It is best to get a printout of our test results for your records. It depends a lot on the actual value of your TPO ab level. At a sufficiently high level these antibodies have the capacity to damage the thyroid gland causing Hashimoto's thyroiditis in the long run. At a minimum, given your family history, you will need regular (typically yearly) monitoring to see if your thyroid hormone levels are still adequate.

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