T4 thyroid hormone necklace

T4 thyroid hormone necklace | gold vermeil

Thyroxine in 18K gold vermeil, at 37 mm. The hormone the thyroid releases into circulation, the one most patients on replacement therapy take every morning, and the one whose synthetic version (levothyroxine) is among the most prescribed medications in the world. The pendant carries the molecule, in the format most often chosen as a clinical milestone gift.

The Science Behind T4

T4 is built from two tyrosine residues coupled into a single molecule, with four iodine atoms attached. The iodine is the unusual feature. Most cells avoid concentrating trace elements, but thyroid follicular cells actively pull iodide from the bloodstream against a steep gradient and incorporate it into thyroglobulin, a large precursor protein. Proteolytic cleavage of thyroglobulin releases T4 (and a smaller fraction of T3) into circulation. In iodine-deficient regions, the thyroid gland enlarges to compensate, producing the visible swelling known as goiter. Iodine deficiency remains the most common preventable cause of intellectual disability worldwide, which is why iodised salt programmes were introduced.

Who Will Recognise It

For people who think about T4 every day, professionally or personally.

• endocrinologists and thyroid specialists
• internal medicine and family medicine physicians
• biochemistry and physiology students
• patients managing Hashimoto's, post-thyroidectomy, or post-radioactive iodine

Explore Related Molecules Jewelry

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Frequently Asked Questions

Why T4 in gold rather than silver?

The silver version is the everyday clinical piece. The gold vermeil reads as a milestone object: chosen most often as a defended-PhD gift, a board-pass marker, a thyroidectomy anniversary, or a long-stable therapy milestone.

What is the relationship to T3?

T4 is the storage form. T3 is the active form. Deiodinase enzymes convert T4 to T3 in peripheral tissues, particularly the liver and kidney. Wearing the pair references the conversion that runs continuously in the background of thyroid physiology.

What are the specs and what is the return policy?

18K gold vermeil with sterling silver core and 2.5 micron gold plating, 37 mm pendant, 45 cm chain with a 5 cm extender. Nickel-free and hypoallergenic. Ships free worldwide via DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.

Is this also available in silver?

Yes. The same 37 mm T4 pendant is available in 925 sterling silver at the same size and chain length.