Low Thyroid Symptoms But Normal Blood Tests. I just got the call that my blood test showed normal. What are the symptoms that people have when they have low metabolism, low energy production? Thyroid function tests measure how well your thyroid gland is working.
You're getting symptoms because your thyroid gland stopped working right. 2 weeks ago i had hyper symptoms and free t3 and free t4 were on low side but normal and tsh was 1.2. When my tsh gets below 1.5 i have hyper. Levels of tsh in the blood increase gradually during the second and third trimesters, but they remain lower than normal levels in women who are not pregnant.
If thyroid blood tests are normal, it makes no sense to insist that the thyroid can still be underactive, rather than consider other diagnoses doctors will, however, be suspicious of the combination of a low normal free t4 of, say, 10 pmol/l and a high normal tsh of perhaps 3.2 milliunits per litre (mu/l).
Note that all lab test markers will be normal in this pattern. These 7 reasons explain how you can have normal thyroid lab tests but still remain symptomatic. You don't need to fast before the blood. Thyroid blood tests are used to diagnose problems with the thyroid, for example, hypothyroidism, hyperthyroidism, graves' disease, and thyroid cancer. Learn how to identify and treat these conditions here.