A member asked:

Could a thyroid blood test miss a hypothyroid issue?

4 doctors weighed in across 2 answers
Dr. Clarence Wimberly answered

Specializes in Family Medicine

The tsh, free t4, and T3 (liothyronine) uptake will miss very little. Make sure that these are what you have had if you have had a blood test for hypothyroidism.

Answered Jan 15, 2015

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Dr. Marc Hirsch answered

Specializes in Family Medicine

There are several parts to a thyroid blood test. Often only 1 part is used, called a TSH (thyroid stimulating hormone.) if it is high normal and a person has symptoms of low thyroid, like depression, weight gain, intolerance to cold, the practitioner often gets a different test, a free circulating thyroid hormone. When it's all borderline it is often worth a trial of low dose thyroid replacement.

Answered Feb 1, 2016

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