GLP-1 S
This product is for laboratory research use only. Not for human or veterinary use. Not a drug, supplement, or medical device.
GLP-1 S is supplied by Bench Grade Peptides as a lyophilized powder in a sealed, lot-numbered vial, for laboratory research use only — not for human or veterinary use.
Its published Certificate of Analysis (lot SEM20-052026R2, analyzed June 9, 2026) is from Freedom Diagnostics, a third-party laboratory, and reports 99.81% purity by HPLC; every published lot is listed on the product's COA page. Vials ship at ambient temperature in protective packaging from Florida (Bench Grade Peptides LLC is registered in Dover, Delaware), with storage notes on the lot's certificate.
Under the Bench Grade Guarantee, if an ISO 17025-accredited US laboratory of the buyer's choosing reports a result that disagrees with the published Certificate of Analysis, Bench Grade refunds the order and shipping to the original payment method and pays the lab fee plus $100 separately, by a payment method arranged with the buyer.
Certificate of analysis
Independent laboratory report.
- Report sample
- Semaglutide 20mg
- Purity (HPLC)
- 99.81%
- Batch
- SEM20-052026R2
- Laboratory
- Freedom Diagnostics
- Analyzed
- Jun 9, 2026
This certificate documents the sample and batch shown above. Match the report to your vial label; contact us if you need a different size or lot. All lots for this product.
Overview
Single-receptor incretin class agonist studied in incretin-pathway metabolic research.
Read the full GLP-1 S compound profile — mechanism, published research, and references →
- Sequence
- Single-receptor incretin class agonist (full identity on COA)
- Purity spec
- ≥ 99.0%
- Form
- Lyophilized powder
Purity specification: ≥99% by HPLC · $114.00–$133.00 depending on selected option
Molecular data
- Sequence
- Single-receptor incretin class agonist (full identity on COA)
- Purity
- ≥ 99.0%
- Lot number
- Assigned at shipment
Research context
Drucker, Cell Metab (2018). Class-level GLP-1R pharmacology reviews. Müller et al., Mol Metab (2019).
Published research
Primary literature on this compound — trial design, endpoints and limitations. Summaries, not recommendations.
- Semaglutide 2.4 mg once a week in adults with overweight or obesity, and type 2 diabetes (STEP 2)Lancet · 2021 · PMID 33667417 · DOI 10.1016/S0140-6736(21)00213-0
- Tirzepatide versus Semaglutide Once Weekly in Patients with Type 2 DiabetesN Engl J Med · 2021 · PMID 34170647 · DOI 10.1056/NEJMoa2107519
- Effect of Subcutaneous Semaglutide vs Placebo as an Adjunct to Intensive Behavioral Therapy on Body Weight in Adults With Overweight or Obesity (STEP 3)JAMA · 2021 · PMID 33625476 · DOI 10.1001/jama.2021.1831
- Once-Weekly Semaglutide in Adults with Overweight or ObesityN Engl J Med · 2021 · PMID 33567185 · DOI 10.1056/NEJMoa2032183
- Liraglutide and Cardiovascular Outcomes in Type 2 DiabetesN Engl J Med · 2016 · PMID 27295427 · DOI 10.1056/NEJMoa1603827
- Semaglutide and Cardiovascular Outcomes in Patients with Type 2 DiabetesN Engl J Med · 2016 · PMID 27633186 · DOI 10.1056/NEJMoa1607141
Storage & handling
Lyophilized GLP-1 S is shipped at ambient temperature in protective packaging. For long-term laboratory storage, keep vials sealed at –20°C, and where your lot's Certificate of Analysis is published, follow its storage notes.
Handling & reference
- Mono, dual and triple incretin agonists comparedThe incretin compounds differ by how many receptors they engage — one, two or three. What that architecture means, and how to verify which molecule is in the vial.
- How to read a peptide Certificate of Analysishow to read a Certificate of Analysis
- HPLC vs mass spec vs amino acid analysis — what each test provesA practical guide to the three peptide QC methods, what each can prove and disprove, and why a complete QC profile requires all three.
- Made in the USA, and what that actually meansWhere our peptides are made, how we vet the active ingredient, and why independent per-lot testing matters more than any origin claim.
About GLP-1 S
- What is GLP-1 S?
- Single-receptor incretin class agonist studied in incretin-pathway metabolic research.
- Which laboratory issued the published certificate for GLP-1 S?
- The published certificate from Freedom Diagnostics records the analysis for the product and batch named in that document. Refer to the report for the tests performed and results; it does not establish testing for every vial size or shipping lot.
Before you order
- Independent report available. Lot SEM20-052026R2 · 99.81% purity by HPLC · Freedom DiagnosticsView the COA →
- UPS Ground ships free on 3 or more vials or on orders of $100 or more, UPS 2-Day at $250 or more and UPS Next Day Air at $600 or more (products after discounts; water does not count). Below those, UPS Ground is $20, UPS 2-Day $15 and UPS Next Day Air $60. Order by 2 PM ET on a business day and it ships the same day.Shipping →
- If a third-party lab disagrees with our COA, full refund plus $100.Guarantee →
- Pay by card.Payments →
- Made in the USA. Synthesized in an ISO-7 cleanroom. Match any laboratory report to the product and lot on your vial.Facility →
- Synthesized at a US facility in an ISO-7 certified cleanroom; filled and finished by a cGMP-certified US manufacturing partner.
- Secure facility with 24-hour CCTV cold-chain storage and time-locked chain-of-custody protocols.
- The published certificate from Freedom Diagnostics records the analysis for the product and batch named in that document. Refer to the report for the tests performed and results; it does not establish testing for every vial size or shipping lot.
- Open the published Certificate of Analysis below and match its product, vial size and batch to your vial. Contact us if you need help confirming the applicable report.
- US-domestic shipping only · Free UPS Ground on 3+ vials or $100+ · 2-Day $15, free at $250+.
More in Incretin Receptor Agonists
Reselling, or buying at wholesale volume? See wholesale and white-label peptide supply.