Questions tagged [thyroid]

Questions and answers to thyroid dysfunction, thyroid diseases and physiological and biological questions related to thyroid disorders.

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TPO (Thyroid Peroxidase) Antibodies - reference range change

A couple years ago (end of 2013) the reference range for TPO antibodies (TPOAb) was <35 IU/ml but now it's <9 IU/ml. That's a huge change (almost 4x). Does anyone know why it changed by so ...
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Different reference ranges of thyroid antobodies

This is related to the following thread: http://health.stackexchange.com/questions/3312/tpo-thyroid-peroxidase-antibodies-reference-range-change I have a question regarding the reference ranges of ...