Side-by-Side Comparison · 2026

CRH (Corticotropin-Releasing Hormone) vs GHRH

CRH (Corticotropin-Releasing Hormone) vs GHRH — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

CRH (Corticotropin-Releasing Hormone)
Hypothalamic Hormone

Corticotropin-releasing hormone (CRH, also called CRF) is the primary hypothalamic regulator of the stress response and HPA axis. The 41-amino acid peptide is released from the paraventricular nucleus (PVN) of the hypothalamus and acts on pituitary corticotrophs to stimulate ACTH...

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GHRH
Hypothalamic Hormone

Growth hormone-releasing hormone (GHRH) is a 44-amino acid hypothalamic peptide that stimulates GH synthesis and pulsatile release from anterior pituitary somatotrophs. It acts via GHRH receptor (GHRHR), a Gs-coupled GPCR, to elevate cAMP and drive GH secretion....

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Key Parameters
Parameter CRH (Corticotropin-Releasing Hormone) GHRH
Category Hypothalamic Hormone Hypothalamic Hormone
Research Preclinical/Clinical Research FDA Approved (via analogs)
Half-Life ~30-68 min (plasma) ~7 min (plasma)
Typical Dose CRH stimulation test: 1 ug/kg or 100 ug IV Sermorelin: 0.2-0.3 mg SC at bedtime
Frequency Diagnostic: single dose Daily (sermorelin)
Route IV (clinical); ICV (research) IV, SC
FDA Status FDA approved (Acthrel for diagnostic use) Sermorelin (GHRH 1-29) FDA approved for pediatric GH deficiency

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Frequently Asked Questions
What is the difference between CRH (Corticotropin-Releasing Hormone) and GHRH?
CRH (Corticotropin-Releasing Hormone): Corticotropin-releasing hormone (CRH, also called CRF) is the primary hypothalamic regulator of the stress response and HPA axis. The 41-amino acid peptide is released from the paraventricular nucleus... GHRH: Growth hormone-releasing hormone (GHRH) is a 44-amino acid hypothalamic peptide that stimulates GH synthesis and pulsatile release from anterior pituitary somatotrophs. It acts via GHRH receptor (GHRH...
Which has a longer half-life, CRH (Corticotropin-Releasing Hormone) or GHRH?
CRH (Corticotropin-Releasing Hormone) half-life: ~30-68 min (plasma). GHRH half-life: ~7 min (plasma).
Can you stack CRH (Corticotropin-Releasing Hormone) and GHRH?
CRH (Corticotropin-Releasing Hormone) and GHRH are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.