Dewey-Humboldt - AZ

Triiodothyronine Hormone T3 Test Near You in Dewey-Humboldt

This blood test evaluates triiodothyronine (T3), one of the two main hormones made by the thyroid gland. Triiodothyronine Hormone T3 Test testing in Dewey-Humboldt, AZ: order online, visit a patient service center near you, and review your results in a secure account.

Typical price

From $39

Results

1-3 business days

Preparation

See preparation notes below

This blood test evaluates triiodothyronine (T3), one of the two main hormones made by the thyroid gland. T3 is the more biologically active hormone and acts on cells to regulate metabolism, heart rate, energy use, and body temperature. T3 travels in the blood both bound to proteins and free; measuring total T3 captures both fractions, while free T3 captures the active portion. The test is used to help determine abnormal thyroid function and to look for T3-related abnormalities, often alongside TSH and T4. Results are interpreted by a healthcare provider using the pattern across the thyroid panel and the clinical picture.

• Triiodothyronine (T3) A thyroid hormone that acts on cells to regulate metabolism and energy use.

• People with symptoms of an overactive thyroid
• Individuals with abnormal TSH or T4 results
• Those being evaluated for a T3 deficiency
• People being monitored during thyroid treatment

• Report thyroid medications and biotin-containing supplements to the laboratory
• Follow any timing instructions provided with your order
• Tell your provider if you are pregnant or recently ill

T3 is compared against a reference range and interpreted with TSH and T4. A high T3 can accompany an overactive thyroid, while a low level may occur with illness or reduced conversion from T4. Because total and free T3 can tell slightly different stories, the ordering provider chooses which is most useful. A healthcare provider should interpret the result with your symptoms and any additional testing.

See Triiodothyronine Hormone T3 Test across Arizona