T3

Formal name: triiodothyronine

Related tests: TSH; T4; FT3; FT4

At a Glance

Why Get Tested?

To help diagnose hyperthyroidism

When to Get Tested?

If you get an abnormal TSH or T4 result

Sample Required?

A blood sample taken from a vein in the arm

If you don't know what a word or a medical term means, try the Mondofacto Online Medical Dictionary .

This article was last reviewed on March 24, 2008. | This page was last modified on August 3, 2010.

The review date indicates when the article was last reviewed from beginning to end to ensure that it reflects the most current science. A review may not require any modifications to the article, so the two dates may not always agree.

The modified date indicates that one or more changes were made to the page. Such changes may or may not result from a full review of the page, so the two dates may not always agree.

This website is certified by Health On the Net Foundation. Click to verify.

We comply with the HONcode standard
for trustworthy health information.
Verify Compliance.

Produced by