GLP-3 research: overview and resources
What GLP-3 research material is, how it is characterized, and where to find every specification, method, lot record and reference GLP-3 Research Supply publishes about it.
What is GLP-3?
Before you buy GLP-3 RT, three numbers tell you most of what you need: purity, identity and net content. On the current lot, KB89232, the laboratory reported 99.98% purity by HPLC, identity confirmed by LC-MS against the 4731.33 g/mol molecular weight, and 13.15 mg measured in a 10 mg vial. Every other lot is listed the same way, with its certificate PDF.
GLP-3 RT is sold in 10 mg and 15 mg and 30 mg vials, at $64.99 to $159.99, with bundle discounts (2 vials save 5%; 3 or more vials save 10%). Orders are placed and shipped by Klow Labs through Klow.bio; this site exists so the results can be checked before the order, and the lot number matched after it arrives.
"GLP-3" is an informal name for this three-receptor design. It does not refer to a naturally occurring hormone; there is no endogenous peptide called GLP-3. That is why GLP3 Labs identifies the material by its molecular data and lot results rather than by name alone.
What is GLP-3 research material?
GLP-3 research material is GLP-3 RT supplied for laboratory research (C221H342N46O68, 4731.33 g/mol) in white lyophilized powder form, sold by lot. Each lot's identity, purity and net content are documented by an independent laboratory in a published certificate of analysis.
How is GLP-3 characterized?
Three questions are answered for every lot, each by a different method:
- Is it the right compound? LC-MS compares observed ions with values calculated from the molecular weight.
- How much of the sample is that compound? HPLC-UV reports the main peak's share of detected peak area. Current lots: 99.67%–99.98%.
- How much peptide is in the vial? Net content is measured directly.
Endotoxin (LAL) and microbial DNA (PCR) results are added where those tests are run.
What has not been established
A certificate of analysis describes the specific sample tested on its test date. It does not establish stability afterward, sequence order beyond what mass confirmation shows, results for other lots, or suitability for any particular purpose.
GLP-3 at a glance
- Product
- GLP-3 RT
- Type
- Synthetic research peptide, 39 residues
- Receptor design
- GIP receptor (GIPR), GLP-1 receptor (GLP-1R) and glucagon receptor (GCGR)
- Molecular formula
- C221H342N46O68
- Molecular weight
- 4731.33 g/mol (average)
- Form
- White lyophilized powder
- Vial sizes
- 10 mg, 15 mg, 30 mg
- Purity, current lots
- 99.67%–99.98% (HPLC-UV)
- Purity specification
- ≥95%
- Identity
- Confirmed by LC-MS on every lot
- Testing laboratory
- Freedom Diagnostics (independent)
- Current lot
- KB89232, reported Aug 15, 2026
- Operated by
- Klow Labs LLC, Chicago, IL
- Where to order
- klow.bio
GLP-3 research resources
Every GLP-3 resource on buyglp3peptide.com, organized from chemistry to documentation.
GLP-3 specifications
Formula, molecular weight, sequence, modifications and release specification.
ChemistryMolecular characteristics
Structure, composition and what it means for identity testing.
QualityQuality and supply chain
Sourcing, specifications, batch documentation and release.
TestingAnalytical testing
How every lot is tested, reviewed and released.
TestingHPLC analysis of GLP-3
Retention time, peaks, area normalization and results by lot.
TestingLC-MS analysis of GLP-3
Charge states, expected vs. observed ions and mass error by lot.
DocumentationCertificates of analysis
Every lot's full results, plus the complete testing records.
DocumentationHow to read a GLP-3 COA
What each section means and what a COA does and doesn't establish.
DocumentationVerify a lot
Look up any GLP-3 lot by the number on the vial.
AnalysisPurity, content and net content
Three different numbers, kept apart.
HandlingStorage and stability
Degradation pathways and lyophilized peptide handling.
ReferenceGlossary
Definitions for every term on a GLP-3 certificate.
Research materialGLP-3 RT research material
Sizes, current lots and availability. Purchasing is handled through Klow.bio.
Research references
Published sources
- NCBI Gene: GIPR (gastric inhibitory polypeptide receptor). National Center for Biotechnology Information, NIH. www.ncbi.nlm.nih.gov/gene/2696
- NCBI Gene: GLP1R (glucagon-like peptide 1 receptor). NIH. www.ncbi.nlm.nih.gov/gene/2740
- NCBI Gene: GCGR (glucagon receptor). NIH. www.ncbi.nlm.nih.gov/gene/2642
- PubChem: 2-Aminoisobutyric acid. National Library of Medicine, NIH. pubchem.ncbi.nlm.nih.gov/compound/2-Aminoisobutyric-acid
- Wilm M. Principles of electrospray ionization. Mol Cell Proteomics. 2011. PMC3134074. pmc.ncbi.nlm.nih.gov/articles/PMC3134074
- U.S. FDA. Q2(R2) Validation of Analytical Procedures. 2024. fda.gov
- U.S. FDA. Pyrogen and Endotoxins Testing: Questions and Answers. Revised 2026. fda.gov
GLP-3 Research Supply analytical documentation
- Lot KB89232: 10 mg, 99.98% purity, reported Aug 15, 2026
- Lot KB48721: 15 mg, 99.67% purity, reported Aug 15, 2026
- Lot KB3011: 30 mg, 99.93% purity, reported May 14, 2026
- GLP-3 testing records (all tests, all lots; CSV available)
Editorial scope
GLP-3 Research Supply research content covers molecular characteristics, peptide structure, analytical chemistry, purity and identity testing, certificates of analysis, lot documentation and laboratory storage and handling.
It does not cover dosing, administration instructions, protocols, personal use or medical advice.
Latest updates
Buy GLP-3
10 mg, 15 mg and 30 mg vials. Current lot KB89232 tested at 99.98% purity with identity confirmed by LC-MS. Current purchasing is available through Klow.bio.