Side-by-Side Comparison · 2026

Apelin-17 vs Apelin-36

Apelin-17 vs Apelin-36 — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

Apelin-17
Cardiovascular Peptide

Apelin-17 is a 17-amino acid C-terminal fragment of the prepro-apelin precursor that binds and activates the APJ receptor (now APLNR) with the highest potency of all naturally occurring apelin isoforms. While apelin-13 is the best-characterized isoform, apelin-17 shows greater re...

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Apelin-36
Cardiovascular Peptide

Apelin-36 is the full-length 36-amino acid form of the apelin peptide family, encoded by the APLN gene. It activates the APJ (APLNR) receptor, a Gi-coupled GPCR, producing cardiovascular effects including vasodilation, positive inotropy, and cardioprotection. The largest naturall...

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Key Parameters
Parameter Apelin-17 Apelin-36
Category Cardiovascular Peptide Cardiovascular Peptide
Research Preclinical / Phase I Preclinical / Phase 2
Half-Life ~3-5 minutes IV (longer than apelin-13) 2-5 minutes (IV)
Typical Dose 30-100 nmol/kg/min (IV infusion, clinical) 1-10 nmol/kg IV (research)
Frequency Acute infusion protocols Variable
Route IV infusion (clinical studies); SC under investigation IV / SC (research)
FDA Status Investigational (Phase I/II) Not approved

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Frequently Asked Questions
What is the difference between Apelin-17 and Apelin-36?
Apelin-17: Apelin-17 is a 17-amino acid C-terminal fragment of the prepro-apelin precursor that binds and activates the APJ receptor (now APLNR) with the highest potency of all naturally occurring apelin isoform... Apelin-36: Apelin-36 is the full-length 36-amino acid form of the apelin peptide family, encoded by the APLN gene. It activates the APJ (APLNR) receptor, a Gi-coupled GPCR, producing cardiovascular effects inclu...
Which has a longer half-life, Apelin-17 or Apelin-36?
Apelin-17 half-life: ~3-5 minutes IV (longer than apelin-13). Apelin-36 half-life: 2-5 minutes (IV).
Can you stack Apelin-17 and Apelin-36?
Apelin-17 and Apelin-36 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.