What is a high T3 free level?

If your results show high total T3 levels or high free T3 levels, it may mean you have hyperthyroidism. Low T3 levels may mean you have hypothyroidism, a condition in which your body doesn’t make enough thyroid hormone. T3 test results are often compared with T4 and TSH test results to help diagnose thyroid disease.

What are normal free T3 and T4 levels?

A normal T3 level might be somewhere between 100 to 200 nanograms per deciliter (ng/dL), while a normal T4 level falls between 5.0 to 12.0 micrograms per deciliter (μg/dL). Free T4, which tests for the amount of T4 that is available in the body, should range between 0.8 to 1.8 nanograms per deciliter (ng/dL).

What is an optimal level of T3?

Typical T3 levels should be: Total T3 = 75-195 ng/dL (nanograms per deciliter of blood)

What is a normal T3 free level for a woman?

Normal Results Free T3 — 130 to 450 picgrams per deciliter (pg/dL), or 2.0 to 7.0 picomoles per liter (pmol/L)

What is total T3 vs free T3?

T3 generally exists in two forms: free and bound T3. ‌Most of the T3 in your blood is attached — or bound — to proteins, and only a small percentage of it is free. A total T3 test measures both bound and free T3, whereas a free T3 test measures just free T3.

What is more important free T3 or total T3?

Total T3 is considered by many experts to be a more reliable measurement than free T3. Total T3 may be used to help diagnose hyperthyroidism or a pituitary gland disorder, evaluate the cause of an overactive thyroid, and monitor a patient’s response to treatment of hyperthyroidism.

What blood test indicates Hashimoto?

Free T4 Test. Thyroxine, or T4, is the active thyroid hormone in the blood, and your doctor may measure the level of free T4 in your bloodstream to help confirm a Hashimoto’s thyroiditis diagnosis.

What is the normal range for free T3 pg mL?

FT3: Free T3 or free triiodothyronine is a method of measuring T3 that eliminates the effect of proteins that naturally bind T3 and may prevent accurate measurement. Normal range: 2.3 – 4.1 pg/mL (picograms per milliliter of blood)

What is the marker for Hashimoto?

That marker is the thyroid peroxidase antibody, or TPOab. If you’re checking thyroid levels and increased levels of this thyroid antibody are detected—along with high TSH and low thyroxine (T4) levels—it may be an indication of Hashimoto’s thyroiditis.