Side-by-Side Comparison · 2026

Obestatin vs Secretin

Obestatin vs Secretin — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

Obestatin
GI Peptide

Obestatin is a 23-amino acid amidated peptide derived from the same preproghrelin precursor gene that produces ghrelin. Discovered in 2005 by Zhang et al....

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Secretin
GI Peptide

Secretin is a 27-amino acid peptide and the first hormone ever discovered (Bayliss and Starling, 1902), historically marking the birth of endocrinology as a scientific discipline. Produced by S-cells in the duodenal mucosa in response to luminal acid, secretin stimulates bicarbon...

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Key Parameters
Parameter Obestatin Secretin
Category GI Peptide GI Peptide
Research Research Clinical
Half-Life 22-23 min (plasma) 45 min (plasma)
Typical Dose 8-100 nmol/kg (animal) 0.2-0.4 mcg/kg (diagnostic)
Frequency Variable Single diagnostic dose or short protocol
Route Subcutaneous, Intravenous Intravenous
FDA Status Not approved Approved (diagnostic use)

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Frequently Asked Questions
What is the difference between Obestatin and Secretin?
Obestatin: Obestatin is a 23-amino acid amidated peptide derived from the same preproghrelin precursor gene that produces ghrelin. Discovered in 2005 by Zhang et al.... Secretin: Secretin is a 27-amino acid peptide and the first hormone ever discovered (Bayliss and Starling, 1902), historically marking the birth of endocrinology as a scientific discipline. Produced by S-cells ...
Which has a longer half-life, Obestatin or Secretin?
Obestatin half-life: 22-23 min (plasma). Secretin half-life: 45 min (plasma).
Can you stack Obestatin and Secretin?
Obestatin and Secretin 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.