8 doctors weighed in:

Does a thyroid ultrasound test for hyper or hypothyroidism?

8 doctors weighed in
Dr. Quang Nguyen
Internal Medicine - Endocrinology
6 doctors agree

In brief: 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.

In brief: 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.
Dr. Quang Nguyen
Dr. Quang Nguyen
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Dr. Melissa Young
Internal Medicine - Endocrinology
1 doctor agrees

In brief: No

Ultrasound looks at structure. Blood test tells you function.

In brief: No

Ultrasound looks at structure. Blood test tells you function.
Dr. Melissa Young
Dr. Melissa Young
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