CW
Retatrutide purity was outstanding
Running metabolic assays with Retatrutide. Lot had >99% purity by reverse-phase HPLC — above spec. Mass spec confirmed molecular weight. Best peptide supplier we've worked with.
HPLC Verified
>98% Purity
COA Included
APEX Performance & Metabolic
GHRP-2
$19.4
GHRP-2 is a synthetic hexapeptide growth hormone secretagogue with greater GH-stimulating potency than GHRP-6 and reduced appetite stimulation. It activates GHS-R1a and is studied in GH deficiency and metabolic research.
| Format | Lyophilized Vial |
|---|---|
| Dosage | 5mg |
| Purity | >98% |
| Sub-Line | APEX |
In Stock — Overnight and 2–3 day delivery available
Product Information
GHRP-2 | Second-Generation GH Secretagogue — Research Grade
GHRP-2 (D-Ala-D-beta-Nal-Ala-Trp-D-Phe-Lys-NH2) is a synthetic hexapeptide GHS-R1a agonist with enhanced GH-stimulating potency compared to GHRP-6 and a reduced orexigenic signature. It is used as both a diagnostic tool and research compound in GH axis studies.
Mechanism of Action
- GHS-R1a agonism — potent pituitary GH release with reduced appetite stimulation vs GHRP-6
- Reduced ghrelin mimicry — lower affinity for peripheral ghrelin receptors limiting hunger side effects in research models
- ACTH/cortisol elevation — moderate increase in ACTH and cortisol at standard doses (less than GHRP-6)
- Pituitary reserve diagnostic — used in clinical GH stimulation testing protocols in endocrinology research
Research Areas
GHRP-2 is studied in GH deficiency diagnosis, body composition, metabolic research, and GHS pharmacology comparisons.
For Research Use Only. Rainbow Peptide supplies GHRP-2 exclusively for in vitro and laboratory research purposes. Not for human or veterinary use.
Frequently Asked Questions
- What is GHRP-2?
- GHRP-2 is a synthetic hexapeptide growth hormone secretagogue with greater GH-stimulating potency than GHRP-6 and reduced appetite stimulation. It activates GHS-R1a and is studied in GH deficiency and metabolic research.
- Is GHRP-2 for sale at Rainbow Peptide?
- Yes. GHRP-2 is available for purchase with Certificate of Analysis confirming >98% HPLC purity. Every order Overnight and 2–3 day delivery available. For Research Use Only.
- What purity is your GHRP-2?
- Rainbow Peptide's GHRP-2 is >98% pure, HPLC verified by an accredited third-party laboratory. A COA is included with every order.
- Is GHRP-2 safe for human use?
- No. GHRP-2 is strictly For Research Use Only (RUO). It is not intended for human consumption and is not intended to diagnose, treat, cure, or prevent any disease.
- How quickly does GHRP-2 ship?
- Overnight and 2–3 day delivery available. Ships in temperature-controlled packaging.
Third-Party Verified
Every Order Ships with a Certificate of Analysis
We don't just claim purity — we prove it. Every batch of GHRP-2 is independently tested by an accredited third-party laboratory before it reaches you. Your COA is linked to your specific lot number.
- HPLC purity analysis — minimum threshold >98%
- Mass spectrometry — molecular weight confirmation
- Lot number traceable to your order
- Endotoxin limits verified — safe for cell-based assays
RAINBOW PEPTIDE LABS CERTIFICATE OF ANALYSIS
Product GHRP-2
Lot # RP-00034-A
HPLC Purity >98.0% >98.5% PASS
Mass Spec (MW) Confirmed Confirmed PASS
Endotoxin <1 EU/mg <0.5 EU/mg PASS
Visual Inspection White powder White powder PASS
What Researchers Say
Verified purchases from active research labs and scientists
5.00
★★★★★
2 verified reviews DP
Ipamorelin quality confirmed via QC
Internal verification confirmed COA data. Purity was 98.6% HPLC. Peptide behavior in our assay was consistent with published data. Will order again for next study phase.
BS
Consistent performance for research
AOD-9604 arrived quickly and in excellent condition. Cold pack preserved temperature. COA was thorough. Results in metabolic assays consistent with expected parameters.
