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Science Journal

Longevia Research NAD+, Glow, and MOTS-C research peptide vials displayed on an open longevity-science magazine spread

THE JOURNAL — Longevia Research Peptide Research Journal

Documented purity, detailed guidelines, and emerging studies in advanced peptide science.

Featured Article

Guidelines13 min

What Is KLOW, and What Does the Research Actually Cover?

KLOW is a market name, not a fixed formula. This guide explains the commonly cited four-peptide blend, what research exists, and what Longevia discloses.

Read the full article

Studies12 min read

What a New 194-Study Review Found About Glutathione and Skin

A March 2026 systematic review in Molecules synthesized 194 studies on glutathione and skin. Here is what it found, route by route, with its caveats.

Studies12 min read

What the 2026 Retatrutide Trial Data Actually Shows

The 2026 retatrutide phase 3 readouts: TRANSCEND-T2D-1 in diabetes and the TRIUMPH-1 osteoarthritis and sleep apnea baskets, with exact trial names.

Studies12 min read

What Does the Independent Evidence Show for Pinealon?

Does Pinealon work? An independent evidence review: narrow but real preclinical research, two small human reports, and trial figures that cannot be verified.

Studies13 min read

How Does Semax Work? BDNF, NGF and the ACTH Connection

Semax raises BDNF and NGF in animal studies, not through a classical receptor. Here is what the mechanism research actually shows, evidence type by type.

Guides13 min read

What Does an Endotoxin Test Measure on a Peptide COA?

A COA with no endotoxin line means the test was not reported, not that the lot passed. What the LAL assay measures and what EU/mg really tells you.

Guides13 min read

What Is TFA in a Peptide and Why Does It Matter in the Lab?

A synthetic peptide powder is a salt plus water. Here is where the TFA counterion comes from, how much mass it adds, and what a COA should tell you.

Guides14 min read

Where Do Peptide Impurities Come From and How Does LC-MS Catch Them?

HPLC shows how clean the main peak looks. LC-MS shows what the peaks are. Where synthesis impurities come from, and what a COA mass line proves.

Guides12 min read

Why Does My Peptide Show 99% Purity but Less Peptide by Weight?

A COA can read 99.2% HPLC purity and 78% peptide content on the same page. Here is why both numbers are correct, and what each one actually counts.

Guides15 min read

Epithalon Dosage Chart & Reconstitution Guide: mcg, mL and Cycles

Epithalon dosage chart and reconstitution math, with published 10 mcg study schedules clearly separated from the 5–10 mg figures seen online.

Guidelines14 min read

How to Stack Research Peptides: Safe Combinations & What to Avoid

How to stack research peptides: receptor overlap, co-formulation chemistry, timing, single-agent controls, and the combination red flags to avoid.

Guidelines17 min read

Best GH Secretagogue Peptides: Tesamorelin vs CJC-1295 vs Ipamorelin

Tesamorelin, CJC-1295, sermorelin and ipamorelin compared on receptor target, mechanism class, human evidence strength and 2026 US regulatory status.

Guidelines16 min read

NAD+ vs NMN vs NR: What the Head-to-Head Research Shows

A 2026 human trial found oral NR and NMN doubled blood NAD+ comparably while nicotinamide didn't. NAD+ itself wasn't tested, and routes differ.

Guides9 min read

Bacteriostatic Water vs. Sterile Water: Which One to Use

Bacteriostatic water contains 0.9% benzyl alcohol and lasts 28 days after puncture; sterile water has no preservative. Here's when each one is correct.

Guides9 min read

Tesamorelin + Ipamorelin: Dosage Chart, Ratio & Reconstitution

The 2:1 tesamorelin/ipamorelin blend explained: both vial sizes, per-component reconstitution math, a full dosage chart, and how it differs from CJC-1295.

Guides9 min read

Glow Blend Peptide: What's Inside, Dosage & How to Mix It

Glow Blend explained: what the vial contains, how to reconstitute it from total blend mass, and why it needs -20°C storage and a 24-48 hour window.

Guides9 min read

KLOW Blend: What's Inside, Dosage Chart & How to Mix It

KLOW Blend explained: what the vial contains, how to calculate reconstitution volume from total blend mass, and a unit-by-unit concentration chart.

Guides13 min read

Semax Nasal Spray: Dosing, Mixing & Storage Research Guide

Converting Semax percentage strength to mg/mL, preparing a spray solution, storage conditions, and what the published intranasal evidence actually shows.

Guides15 min read

MOTS-c Dosage and Reconstitution: Research Protocol Guide

How to convert MOTS-c vial mass into working concentration, choose a diluent, store reconstituted peptide, and read a certificate of analysis correctly.

Guides16 min read

MT-2 Nasal Spray: Dosage, Administration & Research Protocol

Published MT-2 pharmacology is subcutaneous, not intranasal. A research guide to what nasal spray dosing figures actually rest on, and what they don't.

Guides12 min read

Sourcing NAD+ Research Compound: COA, Purity and Lot Checks

How to verify a Certificate of Analysis, read a purity percentage correctly, and check lot traceability before sourcing an NAD+ research compound.

Guidelines12 min read

GLP-3 vs Tirzepatide: A Direct Research Comparison Guide

GLP-3 adds glucagon receptor agonism to the GIP and GLP-1 arms tirzepatide shares. Here is what that third receptor changes for mechanism and study design.

Studies12 min read

What Is GLP-3? Meaning, Mechanism and Triple Agonists Explained

GLP-3 is informal shorthand for a triple receptor agonist, not a real hormone. Here is what the term means and how each of its three receptor arms works.

Guides12 min read

GLP-3 (Rt) Dosage and Reconstitution Research Guide

Reconstitution math, storage conditions, and handling protocol for GLP-3 (Rt) research material, with the degradation chemistry behind each requirement.

Studies12 min read

Oxytocin Research: Mechanism and Social Bonding Pathways

Understand oxytocin's receptor mechanism, documented social-bonding research, stress-regulation findings, and why popular "love hormone" framing oversimplifies the literature.

Emerging13 min read

Epithalon Research Guide: Telomeres, Longevity, and Regulatory Status

Understand Epithalon's telomerase-activation research, its foundational 2003 study, and the FDA's 2026 Pharmacy Compounding Advisory Committee review.

Studies12 min read

Sermorelin Research Guide: Mechanism and GH Secretagogue Comparison

Understand Sermorelin's GHRH receptor mechanism, its FDA approval history as Geref, and how it compares to CJC-1295 and ghrelin-mimetic secretagogues.

Guides13 min read

Peptide Side Effects: What Research Actually Shows

A mechanism-based breakdown of documented peptide side effects — injection site reactions, immunogenicity, GI effects, GH-axis risks, and purity-related events — with citations.

Studies12 min read

Semax vs. Selank: Nootropic Research Peptide Comparison

Compare Semax and Selank mechanisms, published human clinical data, connectomic imaging findings, and why they are studied together despite distinct pathways.

Guidelines12 min read

Melanotan II: Research Status, Legal Questions, and Safety Profile

Understand Melanotan II’s melanocortin receptor mechanism, documented safety case reports, FDA Category 2 status, and how it differs from Melanotan I.

Guides13 min read

Tirzepatide Dosage and Reconstitution Research Guide

Learn how researchers document tirzepatide concentration math, diluent selection, FDA compounding context, and quality controls without guessing doses.

Guides12 min read

Tesamorelin Dosage and Reconstitution Guide

Learn how to interpret tesamorelin product labels, distinguish EGRIFTA formulations, verify reconstitution records, and avoid concentration mistakes.

Guides12 min read

Semaglutide Reconstitution Guide: BAC Water Ratios Explained

Understand semaglutide concentration math, BAC water terminology, vial-label checks, dosing-error prevention, storage records, and approved-product differences.

Guidelines12 min read

CJC-1295 and Ipamorelin Reconstitution Guide

Learn how to document separate CJC-1295 and ipamorelin vials, concentration calculations, compatibility limits, GH-axis evidence, and research controls.

Guides12 min read

BPC-157 Dosage and Reconstitution Research Guide

Learn how researchers document BPC-157 concentration, mcg calculations, draw-volume equations, sterility controls, and evidence limitations without guessing doses.

Emerging13 min read

The Future of Peptide Research: Emerging Trends Researchers Should Watch in 2026

Explore the peptide research trends 2026 is bringing, from AI-driven discovery to GLP-1 advances and longevity science.

Guides12 min read

Why Peptide Purity Matters in Scientific Research

Why does peptide purity matter in scientific research? Learn how HPLC testing, COAs, and purity percentages affect reliable results.

Guides12 min read

What Is Peptide Research? A Beginner's Guide to the Science

New to peptide research? Learn what research peptides are, how they work, their RUO legal status, and purity standards.

Guides11 min read

Why Peptide Research Is Growing: From Molecular Biology to Modern Biotechnology

Discover why peptide research is accelerating across molecular biology and biotechnology, from synthesis methods to purity testing.

Emerging18 min read

Best Research Peptides to Know About in 2026

Evidence-based overview of the most-studied research peptides in 2026: Semaglutide, Tirzepatide, BPC-157, TB-500, GHK-Cu, Ipamorelin, and emerging compounds with mechanisms and research applications.

Guides15 min read

How Long Do Peptides Last After Reconstitution?

Comprehensive stability guide for reconstituted peptides: shelf life by diluent, storage conditions, degradation signs, and peptide-specific timelines for BPC-157, Semaglutide, CJC-1295, and more.

Guides14 min read

Peptide Dosage Calculations: mg, mcg & mL Explained

Master peptide dosage calculations with step-by-step formulas for converting mg, mcg, and mL. Includes insulin syringe unit conversions and practical examples for research protocols.

Studies16 min read

Glutathione for Skin: Benefits, Reconstitution & Limitations

Evidence-based research review of glutathione's effects on skin pigmentation, antioxidant defense, and anti-aging. Covers reconstitution protocols, stability, and current research limitations.

Guides15 min read

Pinealon Peptide Guide: Benefits, Dosage & Reconstitution

Complete research guide to Pinealon (Glu-Asp-Arg) peptide covering neuroprotective mechanisms, DNA interaction, dosing protocols, and reconstitution procedures for laboratory use.

Studies19 min read

Semaglutide vs. Tirzepatide vs. GLP-3 (Rt): A Head-to-Head Research Comparison

A structural and mechanistic comparison of the three leading incretin research compounds — single, dual, and triple receptor agonists — covering molecular architecture, published trial data, and sourcing standards for laboratory use.

Studies17 min read

NAD+ Peptide Research: Mitochondrial Function, Cellular Repair, and the Sirtuin Pathway

A research guide to NAD+ coenzyme biology — its role in mitochondrial ATP production, the sirtuin and PARP pathways, age-related decline, and the sourcing standards that apply to research-grade material.

Guidelines22 min read

GLP-3 (Rt) Peptide: Complete Research Guide to the GLP-1/GIP/Glucagon Triple Agonist

A comprehensive guide to GLP-3 (Rt) — the GLP-1/GIP/glucagon triple agonist reshaping metabolic peptide research — covering molecular architecture, receptor pharmacology, Phase 2/3 evidence, and research-grade sourcing standards.

Studies20 min read

MOTS-C Peptide: Mitochondrial Signaling, Exercise Mimetic Research, and the AMPK Activation Pathway

A research guide to MOTS-c, the mitochondrial-derived exercise mimetic peptide — covering AMPK activation, nuclear translocation, preclinical metabolic data, and sourcing standards for 2026.

Emerging19 min read

GLP-3 Peptide: Triple Receptor Agonism, Mechanism of Action, and What Researchers Need to Know in 2026

What is GLP-3 peptide? A research-grade guide to the triple GLP-1/GIP/glucagon receptor agonist — mechanism, receptor biology, preclinical data, and sourcing standards for 2026.

Guides18 min read

Peptide Reconstitution & Storage Guide: Bacteriostatic Water, Shelf Life, and Cold-Chain Best Practices

A step-by-step protocol for reconstituting lyophilized research peptides, calculating concentration, and storing compounds correctly at every stage to preserve molecular integrity.

Guides17 min read

How to Read a Peptide Certificate of Analysis (COA): HPLC & Mass Spec Purity Testing Explained

A researcher's guide to Certificates of Analysis: how HPLC measures purity, how mass spectrometry confirms molecular identity, how to read a real chromatogram, and how to spot an unreliable supplier.

Guidelines26 min read

CJC-1295 + Ipamorelin: Growth Hormone Axis Research for Muscle Recovery and Body Composition

An in-depth mechanistic guide to CJC-1295 (a GHRH analog) and Ipamorelin (a selective ghrelin receptor agonist), and why their dual-pathway growth hormone stimulation is a cornerstone of muscle recovery and body composition research.

Studies27 min read

Tesamorelin vs. GLP-3 (Rt): Comparing Visceral Fat Research Compounds in Female Physiology Studies

A rigorous comparative analysis of Tesamorelin, a GHRH analog with documented visceral fat research applications, and GLP-3 (Rt), a triple GLP-1/GIP/glucagon agonist, for designing female-physiology body composition protocols.

Studies24 min read

Kisspeptin-10 & MOTS-C: Research Peptides and the Female Hormonal-Metabolic Axis

A detailed research review of Kisspeptin-10, the master regulator of the HPG axis, and MOTS-C, a mitochondrial-derived peptide with sex-dimorphic expression, and why researchers increasingly study them together in female physiology models.

Guidelines26 min read

BPC-157 vs. TB-500: Analyzing Angiogenesis and Cellular Healing Mechanisms

Understanding the stark mechanistic and biochemical differences between BPC-157 (an angiogenic mastermind) and TB-500 (an actin up-regulator) for designing optimal experimental protocols in soft tissue repair.

Studies28 min read

Metabolic Peptides and Tissue Laxity: The Science Behind "GLP-1 Face"

An in-depth, clinical exploration of how GLP-1 and GIP receptor agonists (like Semaglutide and Tirzepatide) impact subcutaneous adipocytes and cause the mechanical failure of the extracellular matrix.

Studies25 min read

The Pharmacokinetics of GHK-Cu: Fibroblast Activation, Collagen Synthesis, and Clinical Implications

An exhaustive, heavily cited review of how the GHK-Cu copper peptide interacts with dermal fibroblasts, modulates the extracellular matrix, and up-regulates collagen synthesis in high-purity research environments.