TSH
Also known as Thyroid-Stimulating Hormone
The pituitary hormone that drives thyroid output — the primary screening test for thyroid function.
Definition
Thyroid-stimulating hormone is released by the anterior pituitary and regulates thyroid-hormone production. Inversely related to circulating thyroid hormone levels: high TSH indicates hypothyroidism, low TSH indicates hyperthyroidism. A standard screening test, but TSH alone misses cases where peripheral T3 activity is blunted — Meto's peptide-readiness panel includes TSH, free T4 and free T3 for this reason.
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Free T4Free Thyroxine
The unbound, bioavailable fraction of thyroxine — the main circulating thyroid hormone.
BiomarkerFree T3Free Triiodothyronine
The bioactive thyroid hormone — small changes have outsized clinical effects.
BiomarkerBiomarker
A measurable substance in blood, tissue or urine that reflects a biological state — the inputs your clinician uses to choose the right protocol.
$149 panel.
A clinician reads it in 24 hours.
Order the Peptide Readiness Panel, draw at a Quest or LabCorp near you, and your clinician sends back a matched protocol with a confidence score.