Research-Grade Peptides for the Scientific Community
120+ peptides in stock, each batch independently tested by HPLC and mass spectrometry. Purity ā„99% guaranteed, with full certificates of analysis published for every product.
Our Peptides
ā„99% purity, third-party tested, COA included
SALESemaglutide Research Starter Kit
Complete semaglutide research kit: 5mg vial + BAC water + syringes. Save 10% vs buying separately. For research purposes only.
SALETirzepatide Research Starter Kit
Complete tirzepatide research kit: 10mg vial + BAC water + syringes. Save 12% vs buying separately. For research purposes only.
SALERetatrutide Research Starter Kit
Complete retatrutide research kit: 10mg vial + BAC water + syringes. Save 17% vs buying separately. For research purposes only.
Complete Lab Starter Kit
All 3 peptides + BAC Water. Save vs buying separately. Everything for your research lab.
GHK-Cu
Naturally occurring tripeptide-copper(II) complex (Gly-His-Lys:CuĀ²āŗ) first isolated from human plasma. Modulates 4,000+ genes including 47 DNA repair pathways. ā„98% HPLC purity. CAS: 49557-74-6. For laboratory research use only.
Semaglutide
GLP-1 receptor agonist with 94% sequence homology to native human GLP-1. Modified for extended half-life via albumin binding and DPP-4 resistance. ā„98% HPLC purity. CAS: 910463-68-2. Lyophilized powder with COA. For laboratory research use only.
Tirzepatide
First-in-class dual GIP/GLP-1 receptor agonist. 39-amino acid peptide with imbalanced agonism favoring GIP receptor engagement. ā„98% HPLC purity. CAS: 2023788-19-2. Lyophilized powder with COA. For laboratory research use only.
CJC-1295 DAC
Synthetic GHRH analogue with Drug Affinity Complex enabling 6ā8 day half-life via albumin conjugation. Produces sustained GH/IGF-1 elevation. ā„98% HPLC purity. CAS: 863288-34-0. For laboratory research use only.
Pen Research Kits
ā Peptide + pen + BAC water + guide
Retatrutide Pen Research Kit
Pre-mixed retatrutide pen ā triple-agonist (GLP-1/GIP/Glucagon). Available in 5mg and 10mg sizes. No reconstitution needed. For research use only.
Semaglutide Pen Research Kit
Pre-mixed semaglutide pen ā available in 5mg and 10mg sizes. No reconstitution needed. Ready-to-use with adjustable dose dial. For research use only.
GHK-Cu Pen Research Kit
Pre-mixed GHK-Cu copper peptide pen ā skin remodeling and regeneration research. Available in 50mg and 100mg sizes. For research use only.
Ipamorelin Pen Research Kit
Pre-mixed ipamorelin pen ā growth hormone secretagogue. Available in 5mg and 10mg sizes. No reconstitution needed. For research use only.
Shop by Category
Find exactly what you need
Accessories
6 products
Anti-Aging Research
13 products
Bioregulators
14 products
Bundles
6 products
Cosmetic Research
6 products
Growth Factors
14 products
Hormones
12 products
Immune Research
4 products
Metabolic Research
2 products
Nootropic Peptides
12 products
Pen Research Kits
6 products
Peptide Blends
5 products
Peptides
11 products
Reproductive Research
6 products
SARMs
8 products
Weight Loss Research
24 products
Why CertaPeptides?
Published COAs, independent lab testing, EU-wide shipping
HPLC & MS Verified
Every batch tested by third-party labs using HPLC and mass spectrometry.
COA Transparency
Latest: Anti-Aging Research Stack ā 98.6% purity. 40+ certificates published.
Fast EU Shipping
EU-wide shipping from ā¬4.99. Delivery across 27 EU member states.
Research Grade
ā„99% purity guaranteed on every product. Full analytical data published on our COA page.
Research & Guides
Latest articles from our team
Peptide Guides
The Ultimate Guide to BPC-157
Comprehensive overview of BPC-157 research, mechanisms of action, and key studies.
February 28, 2026
Lab Protocols
How to Reconstitute Lyophilized Peptides
Step-by-step protocol for safe peptide reconstitution with bacteriostatic water.
February 25, 2026
Lab Protocols
Peptide Storage Guide: Temperature & Stability
Optimal storage conditions for lyophilized and reconstituted peptides.
February 20, 2026