Longevia Research:
The Standard in US Peptides.
U.S.-manufactured compounds produced in cGMP- and ISO-certified laboratories. Independently verified for 99%+ purity.
Engineered for precision research. Trusted for consistency.
Discover Best-Selling Research Peptides
Every compound in our best-seller lineup is independently verified by third-party HPLC and LC-MS analysis. Browse our most-requested research peptides — each shipped from US-based facilities with a lot-specific Certificate of Analysis.
Tesamorelin / Ipamorelin
Tesamorelin / Ipamorelin is a research-grade dual growth hormone secretagogue blend combining a GHRH analog (Tesamorelin) with a selective GHSR-1a agonist (Ipamorelin) into a single lyophilized preparation. This combination targets the somatotropic axis through two complementary receptor pathways, enabling research into dual-mechanism GH secretion. Each component is independently verified to ≥99% purity by third-party HPLC before co-lyophilization. Research Use Only.
Reconstitution Solution
Reconstitution Solution is a sterile, non-pyrogenic preparation of water for injection containing 0.9% benzyl alcohol as a bacteriostatic preservative. It is the standard reconstitution solvent used in peptide research laboratories for dissolving lyophilized peptide compounds prior to experimental application. The benzyl alcohol preservative inhibits microbial growth, allowing multiple withdrawals from a single vial over a defined period under aseptic conditions. This product is manufactured under strict quality controls and is intended exclusively for laboratory research use.
NAD+
NAD+ is a high-purity research-grade preparation of Nicotinamide Adenine Dinucleotide — one of the most fundamentally important coenzymes in cellular biochemistry. Present in every living cell, NAD+ serves as an essential electron carrier in oxidative metabolism and a critical substrate for enzymes governing cellular repair, energy homeostasis, and longevity-associated signaling pathways. This preparation is synthesized to research-grade specifications and subjected to independent third-party HPLC analysis confirming ≥99% purity per batch. It is intended exclusively for in vitro and preclinical laboratory research.
MOTS-C
MOTS-C is a 16-amino-acid mitochondrial-derived peptide (MDP) encoded within the mitochondrial genome, positioning it at the center of modern bioenergetics and metabolic regulation research. Our research-grade MOTS-C is synthesized to exacting laboratory standards, with each batch verified for purity and structural integrity before release. Investigators studying cellular energy production, AMPK pathway activation, and exercise-linked metabolic adaptation rely on consistent, high-purity material. Every vial is lyophilized and sealed under conditions designed to preserve molecular stability. This compound is intended strictly for in-vitro and laboratory research applications by qualified professionals.
Epithalon
Epithalon (also known as Epitalon) is a research-grade synthetic tetrapeptide — Ala-Glu-Asp-Gly — derived from the endogenous polypeptide Epithalamin, which is produced by the pineal gland. It is one of the most studied longevity-focused research peptides in the published literature, with preclinical research examining its role in telomerase activation, telomere elongation, cellular senescence modulation, and age-associated neuroendocrine regulation. Each vial contains lyophilized Epithalon peptide, synthesized via SPPS and independently verified to ≥99% purity by third-party HPLC analysis. This compound is classified Research Use Only (RUO).
KLOW Blend
KLOW Blend is a premium, multi-peptide research blend formulated for laboratories studying tissue regeneration, collagen remodeling, and cellular recovery pathways. Each component peptide is synthesized to research-grade standards and combined to support investigation into synergistic signaling effects rarely captured by single-molecule compounds. Researchers studying recovery-linked cellular mechanisms rely on consistent, high-purity blends to generate reproducible data across repeated trials. Every batch is meticulously synthesized using solid-phase techniques and screened via HPLC to isolate the target peptides from truncated or deletion sequences, then lyophilized to preserve structural integrity during storage and shipping. This blend is intended strictly for laboratory and in-vitro research use by qualified professionals.
Glow Blend
Glow Blend is a premium research-grade peptide blend formulated for laboratory investigation of skin regeneration biology, collagen synthesis pathways, and extracellular matrix signaling. Combining individually COA-verified component peptides into a single lyophilized preparation, Glow is engineered for researchers studying the convergent molecular mechanisms that govern cellular renewal, dermal tissue integrity, and oxidative stress response in controlled experimental settings. Each vial delivers the GLOW blend in lyophilized powder form, independently verified to ≥99% aggregate purity by third-party HPLC analysis. A full Certificate of Analysis is supplied with every batch. This compound is classified Research Use Only (RUO) and is intended exclusively for in vitro and preclinical laboratory research.
GLP-3 (Rt)
GLP-3 (Rt) 10mg is a synthetic research peptide designed for laboratory investigation of multi-receptor hormonal signaling. Classified as a triple agonist compound, it simultaneously targets three distinct metabolic receptors: glucagon-like peptide-1 (GLP-1), glucose-dependent insulinotropic polypeptide (GIP), and glucagon. This receptor profile makes it one of the most pharmacologically complex peptides available within the research peptide field. Each vial contains lyophilized GLP-3 (Rt) powder, synthesized via solid-phase peptide synthesis and subjected to third-party HPLC purity verification. COA documentation is provided with every batch. This compound is strictly intended for in vitro and preclinical research. It is not approved for human consumption, veterinary use, or therapeutic application.
7X Tested.
On Every Single Batch.
Third-party purity verification is the cornerstone of research-grade compounds. Every vial we ship carries an independently verified COA that proves what is inside — not what we claim is inside. Here is exactly what we test for, and why it matters.
≥99% HPLC PURITY ANALYSIS
Stringent chromatographic isolation for every compound – verified before any order ships.
MASS SPECTROMETRY (LC-MS Identity)
Confirms exact molecular match through mass spectrometry analysis.
ENDOTOXIN-FREE
Limulus Amebocyte Lysate (LAL) testing confirms endotoxin levels are well below research-safe thresholds.
STERILITY VERIFICATION
Microbial sterility tests performed in ISO/IEC 17025 Lab.
CONTENT QUANTIFICATION
Confirms labeled potency and concentration.
APPEARANCE & PHYSICAL CHECK
Inspects visual quality and physical integrity.
ILS LAB
Third Party Verified – Independently reviewed and verified by ILS Labs.
≥99% HPLC PURITY ANALYSIS
Stringent chromatographic isolation for every compound – verified before any order ships.
MASS SPECTROMETRY (LC-MS Identity)
Confirms exact molecular match through mass spectrometry analysis.
ENDOTOXIN-FREE
Limulus Amebocyte Lysate (LAL) testing confirms endotoxin levels are well below research-safe thresholds.
STERILITY VERIFICATION
Microbial sterility tests performed in ISO/IEC 17025 Lab.
CONTENT QUANTIFICATION
Confirms labeled potency and concentration.
APPEARANCE & PHYSICAL CHECK
Inspects visual quality and physical integrity.
ILS LAB
Third Party Verified – Independently reviewed and verified by ILS Labs.
Eight Research Focuses: Shop by Category
From bioregulators and growth factors to metabolic and recovery compounds, each category is stocked with research peptides meeting our strict 99%+ purity standard. Every product ships with an independently verified COA.
Our Commitment to Researchers
Immediate Availability
Top research peptides are ready to ship. No backorders. No waiting. Fast shipping guaranteed.
Safe & Protected Shipping
Cold-pack shipping keeps peptides stable. Full tracking provided on every USA order.
99%+ Purity Guaranteed
Every batch is tested by U.S. ISO Labs, with a full Certificate of Analysis Included.
Researcher Community
Connect with researchers, share peer insights, and discuss peptide research applications.
≥99% HPLC Purity — Every Batch, No Exceptions
High-Performance Liquid Chromatography (HPLC) testing is performed on every production batch. Any sample failing to meet our strict 99% purity threshold is immediately discarded — never sold.
LC-MS Verified Peptide Identity
Mass spectrometry (LC-MS) confirms the exact molecular weight and identity of every compound we ship. You receive the peptide on the label, exactly as described.
COA with Every Order — Full Transparency
Every order ships with a lot-specific Certificate of Analysis (COA) traceable to its independent test results. Our full COA library is publicly accessible at any time.
The longevia Standard: Why Purity Matters
Purity is not a marketing claim — it is a measurable, verifiable fact. Impure compounds produce unreliable research results. We operate at the intersection of aesthetic science and analytical chemistry so that every batch you receive is exactly what it claims to be.
US-Based Synthesis — Zero Overseas Powders
99%+ Purity Floor — Any Batch Below This Gets Discarded
Cold-Chain Logistics — Molecular Integrity, Guaranteed
Every compound is synthesized in US-based, ISO-certified peptide laboratories using closed-loop solid-phase peptide synthesis (SPPS). We do not purchase raw, untested powders from overseas suppliers or third-party bulk brokers. Our closed-loop supply chain ensures complete molecular traceability from synthesis to shipping.
The longevia Standard: Why Purity Matters
Purity is not a marketing claim — it is a measurable, verifiable fact. Impure compounds produce unreliable research results. We operate at the intersection of aesthetic science and analytical chemistry so that every batch you receive is exactly what it claims to be.
US-Based Synthesis — Zero Overseas Powders
Every compound is synthesized in US-based, ISO-certified peptide laboratories using closed-loop solid-phase peptide synthesis (SPPS). We do not purchase raw, untested powders from overseas suppliers or third-party bulk brokers. Our closed-loop supply chain ensures complete molecular traceability from synthesis to shipping.
99%+ Purity Floor — Any Batch Below This Gets Discarded
We enforce a non-negotiable 99% purity minimum across our entire catalog. Every single batch is independently tested by third-party laboratories using both HPLC chromatography and LC-MS mass spectrometry. If a batch fails to meet this threshold — for any reason — it is discarded immediately and never fulfilled.
Cold-Chain Logistics — Molecular Integrity, Guaranteed
Peptides are structurally fragile molecules. Thermal degradation begins at room temperature and accelerates over time. We store all inventory in climate-controlled, medical-grade refrigeration and ship using validated cold-chain packaging specifically designed to maintain peptide integrity from our facility to your bench — regardless of transit conditions.
Clinical Reviews & Research Guidelines
Our journal publishes peer-reviewed literature summaries, compound mechanism deep dives, and methodology guides covering purity testing, reconstitution, and storage. Written for researchers who need the science, not the hype.
Semaglutide vs. Tirzepatide vs. GLP-3 (Rt): A Head-to-Head Research Comparison
NAD+ Peptide Research: Mitochondrial Function, Cellular Repair, and the Sirtuin Pathway
GLP-3 (Rt) Peptide: Complete Research Guide to the GLP-1/GIP/Glucagon Triple Agonist
MOTS-C Peptide: Mitochondrial Signaling, Exercise Mimetic Research, and the AMPK Activation Pathway
GLP-3 Peptide: Triple Receptor Agonism, Mechanism of Action, and What Researchers Need to Know in 2026
Frequently Asked Questions About Research Peptides
Everything you need to know about our purity standards, testing methodology, ordering process, and shipping. For institutional or bulk inquiries, contact our support team directly.
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