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Thyroid test results chart!
Thyroid Function Tests
T4 and TSH results
The TSH test and the T4 test are the two most common thyroid function tests. The TSH test is often done first because it’s the best way to initially test thyroid function.
It determines whether a person has hyperthyroidism or hypothyroidism.
The T4 test is known as the thyroxine test. A high level of T4 indicates an overactive thyroid (hyperthyroidism).
Thyroid blood test results
Symptoms include:
- anxiety
- unplanned weight loss
- tremors
- diarrhea
Most of the T4 in your body is bound to protein. A small portion of T4 is not, and this is called free T4.
Free T4 is the form that is readily available for your body to use. Sometimes a free T4 level is also checked along with the T4 test.
The TSH test measures the level of thyroid-stimulating hormone in your blood.
The TSH has a normal test range between 0.4 and 4.0 milli-international units of hormone per liter of blood (mIU/L).
If you show signs of hypothyroidism and have a TSH reading above 4.5 mIU/L, you’re at risk of progressing to hypothyroidism.
Symptoms can include:
Your doctor may d
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