Is T3 or T4 more potent?
Understand the Problem
The question is asking about the potency of thyroid hormones, specifically comparing T3 (triiodothyronine) and T4 (thyroxine). It seeks to understand which of these hormones has a stronger biological effect.
Answer
T3 is more potent than T4.
T3 is more potent than T4.
Answer for screen readers
T3 is more potent than T4.
More Information
T3 (triiodothyronine) is biologically more active and metabolically potent than T4 (thyroxine). T3 is 3-4 times more potent than T4, though it has a shorter half-life.
Sources
- T3 (Triiodothyronine), Total, Serum - Mayo Clinic Laboratories - endocrinology.testcatalog.org
- Thyroid Hormone: What It Is & Function - Cleveland Clinic - my.clevelandclinic.org
- Defending plasma T3 is a biological priority - PMC - NCBI - ncbi.nlm.nih.gov
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