What percentage of T3 is produced directly by the thyroid gland?

Prepare for the Clinical Chemistry Numericals Test. Study with comprehensive questions, each with detailed explanations. Boost your confidence and excel on your exam!

Multiple Choice

What percentage of T3 is produced directly by the thyroid gland?

Explanation:
T3 that comes directly from the thyroid is a minority; the gland mainly secretes T4. In the body, most T3 is produced outside the thyroid by deiodination of T4 in peripheral tissues such as the liver and kidney. This peripheral conversion accounts for about four-fifths of circulating T3, leaving roughly one-fifth produced directly by the thyroid. So the percentage produced directly by the thyroid is about 20%.

T3 that comes directly from the thyroid is a minority; the gland mainly secretes T4. In the body, most T3 is produced outside the thyroid by deiodination of T4 in peripheral tissues such as the liver and kidney. This peripheral conversion accounts for about four-fifths of circulating T3, leaving roughly one-fifth produced directly by the thyroid. So the percentage produced directly by the thyroid is about 20%.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy