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| Some people feel much better when taking thyroid hormones, even though some thyroid tests might indicate that they do not need it. For sub-clinical cases, a short-term thyroid trial is appropriate. The best lab tests to consider if low thyroid function is suspected are TSH (Thyroid Stimulating Hormone), Free T-4, and Free T-3. Your doctor may or may not require lab testing before giving you thyroid hormone on a clinical trial basis, when symptoms indicate. If your doctor refuses to give you a clinical trial and does not provide a convincing reason, you may wish to get a second opinion. Your body temperature should be greater than 98.2°F (36.8°C). Thyroid lab testing can be done while you are on your thyroid medication. The timing of the test and when you take your medication does not make a significant difference on the test results. |
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