Lab records by peptide
Semaglutide vendors
Vendors that sell Semaglutide, ranked by what independent labs found in their vials: 378 tests across 73 shops since December 2024. 30 shops graded A or B for Semaglutide; 25 shops graded D or E.
- 67%of Semaglutide tests passed; median purity 99.80%
- 16%of vials held more than 5% less Semaglutide than the label
- Most common failurepurity under 99.5% (95 tests). In 11 vials the lab could not confirm it was Semaglutide at all.
- Last 90 days15 tests from 11 shops, 8 failed. Newest result Oct 6, 2026.
Semaglutide vendors ranked by lab record
The grade is for Semaglutide only, not the shop's whole catalog. A shop can pass on one peptide and fail on another. Shops with the same grade are ordered by number of tests.
| Vendor | Grade | Tests | Passed | Median purity | Under-filled | Last test |
|---|---|---|---|---|---|---|
| Peptide Crafters | A | 10 | 10/10 | 99.82% | 0/10 | Mar 20, 2025 |
| Paramount Peptides | A | 9 | 9/9 | 99.82% | 0/9 | May 6, 2025 |
| Skye Peptides | A | 9 | 9/9 | 99.90% | 0/9 | Mar 20, 2025 |
| Peptide Gurus | A | 6 | 6/6 | 99.84% | 0/6 | Mar 25, 2025 |
| Bulk Peptide Supply | A | 5 | 5/5 | 99.90% | 0/5 | Mar 18, 2026 |
| HXNetNo working storefront found | A | 5 | 5/5 | 99.80% | 0/5 | Jun 12, 2026 |
| Amplified Amino | A | 4 | 4/4 | 99.75% | 0/4 | Feb 19, 2025 |
| Atomik Labz | A | 4 | 4/4 | 99.85% | 0/4 | May 6, 2025 |
| Injectify | A | 4 | 4/4 | 99.87% | 0/4 | Jul 22, 2025 |
| Peptide Technologies | A | 4 | 4/4 | 99.77% | 0/4 | Mar 20, 2025 |
| Verified Peptides | A | 4 | 4/4 | 99.79% | 0/4 | Feb 19, 2025 |
| Accelerate Labs | A | 3 | 3/3 | 99.95% | 3/3 | Jul 22, 2025 |
| Bulk Peptide Wholesale | A | 3 | 3/3 | 99.90% | 0/3 | Feb 6, 2026 |
| Mix Peptides | A | 3 | 3/3 | 99.90% | 0/3 | Jan 29, 2026 |
| Uther | A | 3 | 3/3 | 99.95% | 0/3 | Dec 29, 2025 |
| Amino Asylum | A | 2 | 2/2 | 99.83% | 0/2 | Feb 19, 2025 |
| NextechLabs | A | 2 | 2/2 | 99.57% | 0/2 | Jan 23, 2025 |
| NuLife Peptides | A | 2 | 2/2 | 99.90% | 2/2 | Aug 12, 2026 |
| Reta-Peptide | A | 2 | 2/2 | 99.90% | 0/2 | Jan 29, 2026 |
| Yiwu Aozuo Trading Co | A | 2 | 2/2 | 99.95% | 0/2 | Dec 30, 2025 |
| Pura Peptides | A | 1 | 1/1 | 99.80% | 0/1 | Aug 31, 2026 |
| Quenna PMQNo working storefront found | A | 1 | 1/1 | 99.90% | 0/1 | Dec 5, 2025 |
| Peptide SciencesLast failure May 5, 2025: purity under 99.5% | B | 15 | 13/15 | 99.80% | 14/15 | Mar 1, 2026 |
| Shanghai Sigma Audley SSALast failure Oct 30, 2025: purity under 99.5% | B | 10 | 8/10 | 99.69% | 3/10 | Mar 3, 2026 |
| TydesLast failure Apr 25, 2025: amount in the vial more than 35% off the label | B | 9 | 8/9 | 99.89% | 0/9 | Apr 30, 2025 |
| Royal PeptidesLast failure Aug 3, 2025: purity under 99.5% | B | 8 | 7/8 | 99.92% | 0/8 | Jul 23, 2026 |
| Amino AmigosLast failure Jan 14, 2025: amount in the vial more than 35% off the label | B | 7 | 6/7 | 99.80% | 0/7 | Mar 20, 2025 |
| Peptide-SLast failure Jul 24, 2025: purity under 99.5% | B | 6 | 4/5 | 99.64% | 0/5 | Jan 15, 2026 |
| Forever Young PharmacyLast failure Feb 13, 2025: purity under 99.5% | B | 5 | 4/5 | 99.82% | 0/5 | Feb 19, 2025 |
| Liberty PeptidesLast failure May 5, 2025: purity under 99.5% | B | 5 | 4/5 | 99.98% | 0/5 | Oct 24, 2025 |
43 more shops with Semaglutide tests
- Polaris Peptides · 19 tests · grade C
- Planet Peptide · 8 tests · grade C
- Astro Peptides · 7 tests · grade C
- BeiBangAn · 4 tests · grade C
- Deuschem · 4 tests · grade C
- PeptiSlim · 4 tests · grade C
- Risynth Bio · 4 tests · grade C
- Shenzhen Loga Tech LG LOGA · 4 tests · grade C
- ZLZ Peptide · 13 tests · grade D
- HK Peptides · 10 tests · grade D
- Elite Research USA · 9 tests · grade D
- Oupeptide · 6 tests · grade D
- Alpha-Gen · 5 tests · grade D
- Suaway Lab Research · 5 tests · grade D
- Wuhan Wansheng Biotechnology · 5 tests · grade D
- Qing Li Peptide · 3 tests · grade D
- Nexaph · 15 tests · grade E
- Nuscience Peptides · 14 tests · grade E
- Zhejiang Yichenkang Biotechnology · 7 tests · grade E
- Platinum Cryo · 6 tests · grade E
- Tianjin Ruiwang New Material Technology Co · 5 tests · grade E
- Precision Peptide Co · 4 tests · grade E
- Pure Rawz · 4 tests · grade E
- Simple Peptide · 4 tests · grade E
- SRY Labs · 4 tests · grade E
- TSC Top Supplements China · 4 tests · grade E
- Xian Yihang Technology · 4 tests · grade E
- Bfflist AMO · 3 tests · grade E
- Nantong Guangyuan Chemical GYC · 3 tests · grade E
- Top Peptide · 3 tests · grade E
- Aminos Research · 2 tests · grade E
- Henan Sahe Peptide · 2 tests · grade E
- Peptide Partners · 2 tests · grade E
- Coastal Peptides · 6 tests
- Eternal Peptides · 4 tests
- Loti Labs · 4 tests
- Peptides For Sale · 4 tests
- Zhejiang Jiuzhou Chem Co · 3 tests
- INDR Labs · 2 tests
- Mai Peptide · 2 tests
- Pharma Grade Peptides · 2 tests
- Apollo Peptide Sciences · 1 test
- BioPrecise LLC · 1 test
Recent failed Semaglutide tests
The newest results that failed, with the reason and the lab's certificate. Check whether your batch number matches before you trust a shop's own paperwork.
- INDR LabsOct 6, 2026 · BTLabsthe lab could not confirm it was the labelled peptide · Certificate
- INDR LabsOct 6, 2026 · BTLabsthe lab could not confirm it was the labelled peptide · Certificate
- ZLZ PeptideOct 1, 2026 · Krause Analyticalpurity under 99.5% · purity 98.90% · fill +15.0% · Certificate
- Apollo Peptide SciencesSep 20, 2026 · PharmLabspurity under 99.5% · purity 99.44% · fill +5.0% · Certificate
- Mai PeptideSep 18, 2026 · PharmLabsthe lab could not confirm it was the labelled peptide · Certificate
- Polaris PeptidesAug 9, 2026 · BTLabsamount in the vial more than 35% off the label · purity 99.80% · fill +37.0% · Certificate
Semaglutide vendors that closed or went offline
Each status is quoted from its source. A shop with no working website may still sell through messaging apps, which is a reason for more caution, not less.
- HXNetNo working storefront found (Finnrick) · last Semaglutide test Jun 12, 2026
- Quenna PMQNo working storefront found (Finnrick) · last Semaglutide test Dec 5, 2025
- Shenzhen Loga Tech LG LOGAWebsite domain does not resolve (Our site check) · last Semaglutide test Dec 17, 2025
- Tianjin Ruiwang New Material Technology CoWebsite domain does not resolve (Our site check) · last Semaglutide test Apr 28, 2026
- Aminos ResearchNo products for sale (Finnrick) · last Semaglutide test Apr 28, 2026
- Peptide PartnersPayment problems reported (Finnrick) · last Semaglutide test Oct 24, 2025
The full list is on closed peptide vendors.
Before you order Semaglutide
- Look at the shop's grade for Semaglutide, not its average. Polaris Peptides has the most Semaglutide tests (19); a shop with one or two tests has not shown it is consistent.
- 33% of these vials were bought and sent in by customers; the rest were sent by Finnrick or by the shop itself. Results from vials a shop chose to send are the weakest evidence.
- 8 labs tested them, mostly Krause Analytical and Chromate. Ask for the certificate for your batch and check it on the lab's own site.
- Run the vendor checklist before paying, and read how the grades work.
Research peptides are sold for laboratory use only. This page reports lab results; it is not medical advice.