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What tests do you need to have done to figure out if you have hypo or hyperthyroidism?

3 doctors weighed in
Dr. Quang Nguyen
Internal Medicine - Endocrinology
1 doctor agrees

In brief: Lab tests

The common tests for both condition are: TSH and free t4.
For hyperthyrodism, you will also need a free t3 (liothyronine). Once your doctor has these results, more tests might be needed such as thyroid antibodies, thyroid ultrasound, thyroid uptake and scan and possibly thyroid biopsy. The latter tests are usually not needed if tsh, free T4 and free T3 (liothyronine) are normal.

In brief: Lab tests

The common tests for both condition are: TSH and free t4.
For hyperthyrodism, you will also need a free t3 (liothyronine). Once your doctor has these results, more tests might be needed such as thyroid antibodies, thyroid ultrasound, thyroid uptake and scan and possibly thyroid biopsy. The latter tests are usually not needed if tsh, free T4 and free T3 (liothyronine) are normal.
Dr. Quang Nguyen
Dr. Quang Nguyen
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Dr. Steve Martinez
Breast Surgery

In brief: Basic labs

The quickest and best overall test to diagnose hyper or hypothyroidism is the thyroid stimulating hormone or TSH test.
A low value means hyperthyroidism and a high value means hypothyroidism. Usually an additional measurement of t4, a free thyroid hormone, will be done as well.

In brief: Basic labs

The quickest and best overall test to diagnose hyper or hypothyroidism is the thyroid stimulating hormone or TSH test.
A low value means hyperthyroidism and a high value means hypothyroidism. Usually an additional measurement of t4, a free thyroid hormone, will be done as well.
Dr. Steve Martinez
Dr. Steve Martinez
Thank
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