Growth Hormone
Also known as GH · Somatotropin · HGH
A pituitary-secreted hormone that drives protein synthesis, fat metabolism and tissue repair — released in pulses, peaking at night.
Definition
Growth hormone (somatotropin) is a 191-amino-acid polypeptide secreted by the anterior pituitary in pulses, with the largest pulse during slow-wave sleep. It acts directly on adipose and muscle and indirectly through IGF-1 produced by the liver. GH declines ~14% per decade after age 30; peptide therapy via GHRH analogs and GH secretagogues restores pulsatility without the feedback suppression of full HGH.
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IGF-1Insulin-like Growth Factor 1
The primary blood marker of growth-hormone activity — the lab that gates any GH-axis protocol and the one re-checked at month 3.
MechanismGHRH AnalogGrowth-Hormone-Releasing Hormone Analog
A class of peptides that mimic growth-hormone-releasing hormone at the pituitary to trigger the body's own GH release — CJC-1295, Tesamorelin and Sermorelin.
PeptideIpamorelin
A selective growth-hormone secretagogue that triggers GH release without spiking cortisol or prolactin — usually paired with CJC-1295.
$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.