GLP-2 TR frequently asked questions

GLP-2 TR is a synthetic dual-receptor research peptide (39 residues) designed for activity at the GIP receptor (GIPR) and GLP-1 receptor (GLP-1R). GLP2 Labs supplies it as a lyophilized powder in 30 mg vials, with an independent certificate of analysis for every lot.

GLP-2 TR research material is GLP-2 TR supplied for laboratory research, sold by lot, with each lot's identity, purity and net content documented by an independent laboratory in a published certificate of analysis.

"GLP-2 TR" is a product name for this two-receptor design. It is not glucagon-like peptide-2 (GLP-2), the natural 33-residue peptide cut from proglucagon, and it is not designed for the GLP-2 receptor. That is why GLP2 Labs identifies the material by its sequence, formula and lot results rather than by name alone.

The molecular formula is C225H348N48O68 and the average molecular weight is 4813.45 g/mol. The peptide has 39 residues.

Store sealed, dry and protected from light at the temperature stated on the vial label. Allow a cold vial to reach room temperature before opening.

No. GLP-2 is a natural 33-residue peptide from proglucagon. GLP-2 TR is a synthetic 39-residue peptide designed for the GIP and GLP-1 receptors.

30 mg vials through Klow.bio. The current lot measured 31.15 mg in the tested vial.

GLP-2 TR is analyzed with complementary methods: HPLC-UV for purity, HPLC-RTM for identity, a quantitative measurement for net content, and, where listed, LAL endotoxin and PCR microbial testing. Results are published per lot at glp2.bio/coa/.

Every lot is tested by ILS Laboratories, an independent third-party analytical laboratory. GLP2 Labs does not test its own material for published certificates.

Current lots report HPLC-UV purity 99.77%, against a stated release specification of ≥95%. The most recent result is 99.77% for lot KB-52383.

By HPLC retention-time comparison with a reference standard (HPLC-RTM), performed by ILS Laboratories on every lot. The laboratory runs the sample and a reference standard of the named compound under the same HPLC conditions; identity is confirmed when the main peak elutes at the reference standard’s retention time.

Endotoxin and microbial testing are reported per lot. Every lot page in the COA archive states whether those tests were performed.

HPLC (high-performance liquid chromatography) separates a sample's components so each appears as a peak. The purity percentage is the main peak's share of all UV-detected peak area. It does not confirm identity (the separate HPLC-RTM test does) or measure the amount of peptide in the vial (net content does).

A GLP-2 TR certificate of analysis is the testing laboratory's report for one lot: the lot number, test dates, methods and results for purity, identity and net content. GLP2 Labs publishes every lot's COA as a readable page at glp2.bio/coa/.

Find the lot number printed on your vial label and enter it at glp2.bio/verify/, or open that lot in the COA archive at glp2.bio/coa/.

Go to portal.ils-lab.com (or scan the QR code on the certificate) and enter the lot's verification access code, listed on its lot page, to view the laboratory's own copy of the certificate.

Net content is the laboratory's measurement of peptide in the tested vial. Current lots measured 31.15 mg in a 30 mg vial.

Current GLP-2 TR research material availability is provided through Klow.bio, the purchasing platform operated by Klow Labs: https://klow.bio/product/glp2/ Lot records, testing information and certificates of analysis are published on glp2.bio so they can be reviewed before purchasing.

Yes. Purchasing information and current availability for GLP-2 TR research material are provided through Klow.bio: https://klow.bio/product/glp2/

Yes. Every lot is tested by ILS Laboratories, an independent laboratory, for HPLC-UV purity, HPLC-RTM identity and net content. The stated release specification is ≥95% HPLC-UV purity with identity confirmed by HPLC retention-time match against a reference standard. The current lot, KB-52383, reported 99.77% purity.

Enter the lot number from your vial label at glp2.bio/verify/ to see that lot's results. To confirm with the laboratory directly: Go to portal.ils-lab.com (or scan the QR code on the certificate) and enter the lot's verification access code, listed on its lot page, to view the laboratory's own copy of the certificate.

The current price is $59.99, with bundle pricing (2 vials save 5%; 3 or more vials save 10%). Current pricing is always listed on Klow.bio.

Orders ship the next business day. Same-day cutoff is 4:00 PM CT, with overnight and 2-day options at checkout.

GLP2 Labs is a dedicated GLP-2 TR research supplier with a controlled sourcing and quality-assurance program. Research material is sourced through our qualified manufacturing supply chain and subjected to analytical testing and lot-level documentation before release. GLP2 Labs is operated by Klow Labs LLC in Chicago, IL. Purchasing is handled through Klow.bio.

GLP2 Labs is operated by Klow Labs LLC, 3838 N Ravenswood Ave PMB 2027, Chicago, IL 60613. Klow Labs LLC also operates klow.bio.

No. GLP2 Labs supplies research material and publishes analytical documentation. It does not provide medical advice, dosing, administration guidance or protocols.

Email contact@klow.bio, call (708) 262-7687, or use the contact form at glp2.bio/contact/.