Track your order·Live shipping updates from any carrier
99.2% Purity. Independently Verified.
99.2% average HPLC purity across our published lab reports, from Janoshik Analytical (Czech Republic) — an independent lab with no commercial relationship to our supply chain. Every COA published. Including the ones we'd rather not.

Our Peptides
≥98% supplier spec, selected lots independently tested

Semaglutide
Semaglutide is a long-acting GLP-1 receptor agonist peptide analogue (CAS 910463-68-2), supplied by CertaPeptides as lyophilized powder for laboratory research use only (≥98% supplier batch specification; selected lots independently tested, 99.3% avg across published reports). It is widely used as a long-acting reference GLP-1R agonist in incretin receptor-pharmacology and preclinical metabolic-model research. For laboratory research use only. Not for human consumption.

Tirzepatide
Tirzepatide is a 39-amino acid dual GIP/GLP-1 receptor agonist peptide studied for metabolic and insulinotropic signalling pathways in vitro research. Features a C-20 fatty diacid moiety enabling extended pharmacokinetic profile. Shipped to a ≥98% supplier batch specification; selected lots independently tested (99.3% avg across published reports). Key research areas: Dual incretin receptor signaling and glucose-dependent insulin secretion Insulin-sensitivity and metabolic-homeostasis pathways studied in research models Body-weight and energy-balance signalling studied in research models For research purposes only. Not for human consumption.

Retatrutide
Retatrutide is a novel triple-agonist peptide targeting GIP, GLP-1, and glucagon receptors simultaneously. This multi-receptor approach has generated significant research interest in metabolic studies. Triple hormone receptor agonism (GIP/GLP-1/Glucagon) Metabolic pathway modulation research Energy homeostasis and body composition studies For research purposes only.

Semaglutide Laboratory Reconstitution Bundle
Semaglutide 10mg + Bacteriostatic Water 5ml + 2 x 3ml syringes + 5 x 1ml insulin syringes. Everything you need to begin research. For research purposes only. Bundle price: save EUR 26.97 vs buying the peptide, bacteriostatic water and syringe packs separately (about EUR 86.96 on their own).

Tirzepatide Laboratory Reconstitution Bundle
Tirzepatide Research Starter Kit — complete bundle for tirzepatide research. Includes: tirzepatide 10mg (lyophilized, ≥98% purity per supplier batch spec), bacteriostatic water 5ml, 2 × 3ml syringes, 5 × 1ml insulin syringes. Kit saves EUR 26.97 vs buying components separately. For laboratory research use only — not for human consumption.

Retatrutide Laboratory Reconstitution Bundle
Retatrutide Research Starter Kit — everything needed to begin retatrutide research in one bundle. Includes: retatrutide 10mg (lyophilized, ≥98% purity per supplier batch spec), bacteriostatic water 5ml, 2 × 3ml syringes, 5 × 1ml insulin syringes. Kit saves EUR 27.47 vs buying components separately. Research use only.

BPC-157
BPC-157 (Body Protection Compound 157) is a stable 15-amino-acid pentadecapeptide fragment derived from a gastric juice protein, supplied by CertaPeptides as a lyophilized laboratory research compound (≥98% supplier batch specification; selected lots independently tested, 99.3% avg across published reports; CAS 137525-51-0). In preclinical literature, Sikiric et al. (2014, PMID 23755725) reported effects on the nitric oxide system in rodent models, and Chang et al. (2014, PMID 25415472) observed increased growth hormone receptor expression in cultured tendon fibroblasts. These findings are reported here for research context only and are not medical claims. For laboratory research use only. Not for human consumption.

TB-500
TB-500 is a synthetic peptide corresponding to the 17-amino acid active region (Ac-SDKP sequence) of Thymosin Beta-4, a naturally occurring 43-amino acid protein. While the full-length Thymosin Beta-4 molecule has broad biological activity, TB-500 retains the key actin-binding domain that drives research interest in cell migration and tissue biology. Shipped to a ≥98% supplier batch specification; selected lots independently tested (99.3% avg across published reports). Key research areas: Cell migration and tissue remodeling Actin-binding and cytoskeletal dynamics Cardiac tissue biology and cellular signaling Important distinction: TB-500 is a fragment of Thymosin Beta-4, not a synonym for it. Full-length Thymosin Beta-4 (43 aa) has broader systemic activity, while TB-500 (17 aa) retains the active actin-sequestering region. For research purposes only. Not for human consumption.

GHK-Cu
GHK-Cu is a naturally occurring copper-binding tripeptide (Glycyl-L-histidyl-L-lysine copper complex) studied extensively in tissue biology and cellular remodeling research. Concentration declines with age, making it a key compound in age-related biological studies. Shipped to a ≥98% supplier batch specification; selected lots independently tested (99.3% avg across published reports). Key research areas: Tissue remodeling and extracellular matrix pathways Collagen and decorin synthesis stimulation Gene expression modulation (over 4,000 genes identified) For research purposes only. Not for human consumption.

Epitalon
Epitalon is a 4-amino acid synthetic tetrapeptide (Ala-Glu-Asp-Gly) studied for telomerase activation and telomere biology research. Derived from pineal gland epithalamin. Shipped to a ≥98% supplier batch specification; selected lots independently tested (99.3% avg across published reports). Key research areas: Telomerase reactivation and telomere elongation in somatic cells Pineal gland neuroendocrine function and melatonin regulation Cellular aging and geroprotective mechanisms For research purposes only. Not for human consumption.

Selank
Selank is a synthetic heptapeptide derived from the endogenous immunomodulatory peptide tuftsin. It has been extensively studied for its anxiolytic-like properties and effects on neuropeptide expression in research models. Tuftsin-derived anxiolytic peptide analog Enkephalin metabolism and neuropeptide studies Immune modulation and CNS receptor binding markers research For research purposes only.

Semax
Semax is a synthetic heptapeptide analog of the adrenocorticotropic hormone fragment ACTH(4-7). It has been studied extensively for its neurotrophic and nootropic properties in various experimental models. ACTH(4-7) analog with enhanced metabolic stability Neurotrophic factor expression and BDNF pathway research CNS receptor binding markers and memory research models For research purposes only. Not for human consumption.

Ipamorelin
Ipamorelin is a synthetic pentapeptide growth hormone secretagogue that selectively activates the ghrelin/GHS receptor. It is recognized for its high selectivity in stimulating growth hormone release without significantly affecting other pituitary hormones. Selective GH secretagogue (ghrelin receptor agonist) Growth hormone pulsatility research Gastrointestinal motility studies For research purposes only.

Bacteriostatic Water
USP-grade bacteriostatic water (3ml) with 0.9% benzyl alcohol. Sterile, endotoxin-tested. For peptide reconstitution.

Peptide Mixing Kit
Peptide Mixing Kit — complete reconstitution and storage bundle for research peptides. Kit includes: 3 × 5ml bacteriostatic water, 10 × insulin syringes (29G, 1ml), 5 × alcohol swabs (70% IPA), and 2 × 3ml storage vials. Research use only.
Independently Verified by Janoshik Analytical
We don't ask you to trust us. Every report below — purity and, where noted, heavy-metals analysis — links to the independent lab. Verify the results yourself.
Shop by Category
Find exactly what you need
Bioregulator Research Peptides
2 products
Copper and Mitochondrial Research Peptides
4 products
Cyclic and Neuropeptide Research Compounds
8 products
Dermatological and Skin Research Compounds
2 products
Endocrine and Hormone Research Peptides
11 products
GLP-1 and Incretin Research Peptides
5 products
Gonadotropic Research Peptides
4 products
Growth Factor Research Peptides
3 products
Laboratory Consumables and Reconstitution Supplies
4 products
Melanocortin and Pigment Research Peptides
3 products
Metabolic and Cellular-Aging Research Compounds
7 products
Oral and Capsule Research Compounds
2 products
Research Kits and Multi-Compound Sets
3 products
SARMs
7 products
Thymic Research Peptides
2 products
Tissue Healing and Regeneration Research Compounds
7 products
Uncategorized
1 product
Top Research
Essential guides for peptide researchers
Why CertaPeptides?
Published COAs, independent lab testing, EU-wide shipping
Independently Lab-Tested
Selected lots are independently tested by Janoshik Analytical (HPLC + mass spectrometry); every product ships to a ≥98% supplier batch specification.
Janoshik Reports
Latest: Tirzepatide 10mg — 99.60% HPLC. 22 reports published.
Fast EU Shipping
Shipping from €4.99 across 33 countries — EU, UK, Switzerland, Norway, Iceland, Israel, and Serbia.
Research Grade
≥98% supplier batch specification on every product; selected lots independently verified, searchable at /verify.
Research & Guides
Latest articles from our team

Research
Why Research Peptide Parcels Get Seized at EU Customs (and How Intra-EU Shipping Avoids It)
Parcels from UK and US suppliers cross an EU customs border where peptides can be classified as medicines and seized. Intra-EU shipments face no customs clearan
June 11, 2026

Research
How to Read a Peptide COA + Verify a Janoshik Report
A peptide Certificate of Analysis (COA) is a batch test report documenting a specific lot’s identity (is it the molecule […]
June 1, 2026

Research
Research Peptide Legal Status in Europe (2026): Country-by-Country Guide
For laboratory research purposes only. Not for human consumption. This article is general regulatory information, not legal advice; see the […]
June 1, 2026
