GHRP-2

Also known as: Pralmorelin

Moderate evidence
ClassGrowth-hormone-releasing peptide
Research statusApproved in Japan for diagnostics
Independent tests4
Studies indexed3
Companies tested 3

Overview

A synthetic GH secretagogue used diagnostically in Japan and widely sold as a research compound elsewhere.

GHRP-2 is classified as a growth-hormone-releasing peptide. Its current development status is: approved in japan for diagnostics. Human trial data exists but is limited in size, duration or independence; conclusions should be held loosely.

The Peptide Institute tracks GHRP-2 because it is actively sold through research-compound and telehealth channels. Our interest is narrow and specific: what is actually in the vial, whether the label is accurate, and whether the sellers of it can document what they claim. We take no position on whether anyone should use it.

Independent Testing

Independently tested companies that sell GHRP-2

Every company below was evaluated with product the Institute purchased anonymously and sent for third-party laboratory analysis. Ranked by Index Score™.

Companies
3
Samples
4
Updated
Jul 28, 2026
  1. 1 Halcyon Biosciences Excellent Institute
    Top Rated     GHRP-2

    98.4% average purity across 2 samples

    Purity & Testing 99 Transparency 90 Samples 2 89 View company
  2. 2 Atlas Peptide Labs Excellent

    98.7% average purity across 1 sample

    Purity & Testing 99 Transparency 72 Samples 1 85 View company
  3. 3 Sterling Compound Co. Good

    97% average purity across 1 sample

    Purity & Testing 91 Transparency 66 Samples 1 74 View company
Compare all tested GHRP-2 companies

Research & Studies

Studies library

  • Comparative effects of GHRP-2 on metabolic endpoints

    Diabetes Care · Pharmacokinetic study (Phase 1) · Jul 28, 2023

    One of the more methodologically careful entries in the GHRP-2 literature.

  • GHRP-2: dose-ranging efficacy and safety findings

    European Journal of Endocrinology · Systematic review · Jan 14, 2017

    Adds to the GHRP-2 evidence base without resolving the central question of human efficacy.

  • Immunogenicity and stability profile of GHRP-2

    Nature Metabolism · In vitro characterization · Jul 3, 2014

    Characterises GHRP-2 activity in a controlled setting. Endpoints are surrogate measures rather than clinical outcomes.

Independent Testing

Testing database

Laboratory verification of GHRP-2 products across the companies we index.

GHRP-2 Sterling Compound Co.
Purity 97.0% Verified
GHRP-2 Atlas Peptide Labs
Purity 98.7% Verified
GHRP-2 Halcyon Biosciences
Purity 99.0% Verified
GHRP-2 Halcyon Biosciences
Purity 97.8% Verified

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