A 45-year-old member asked:
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Does a thyroid ultrasound test for hyper or hypothyroidism?

1 doctor answer
Dr. Quang Nguyen
Specializes in Endocrinology
Neither: A thyroid u/s tests for the texture and appearance of the gland. It can tell you if you have a growth on it or not. Sometimes an u/s can suggest hyper by the amount of blood flow going though it but it's not always accurate/reliable. I wouldn't use a thyroid u/s to test for hyper or hypo function. You need a blood test for that.
Answered on Sep 9, 2012

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