T3, Total details
What T3, Total shows
Total T3 measures triiodothyronine (T3), one of your two main thyroid hormones, including both the bound (inactive) and unbound (active) portions together. It's used in thyroid function evaluation, particularly useful for diagnosing T3 thyrotoxicosis (a less common form of hyperthyroidism where T3 is elevated even when T4 looks normal) and for assessing hyperthyroidism severity. Because total T3 is affected by binding protein levels (which can shift with pregnancy, liver disease, or certain medications), free T3 is often considered a more precise measurement when binding protein levels might be abnormal.
Normal ranges
Typical adult range
76–181 ng/dL
Most labs report a range close to this
Hormunity optimal range
90–168 ng/dL
A narrower functional target
Each lab sets its own reference range. Always compare your result with the range printed on your report, and review it with a healthcare provider.
Tests that include T3, Total
T3, Total measures the total amount of triiodothyronine in the blood, including both bound and unbound forms. It helps assess thyroid function and is particularly useful in evaluating cases of hyperthyroidism.
- T3, Total Measures total triiodothyronine (T3), including both bound and unbound hormone, used in thyroid function evaluation.
T3, Total measures the total amount of triiodothyronine in the blood, including both bound and unbound forms. It helps assess thyroid function and is particularly useful in evaluating cases of hyperthyroidism.
- T3, Total Measures total triiodothyronine (T3), including both bound and unbound hormone, used in thyroid function evaluation.
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