Reviews from lab results · vendors can't buy a grade

Lab records by peptide

Retatrutide vendors

Vendors that sell Retatrutide, ranked by what independent labs found in their vials: 4,565 tests across 401 shops since December 2024. 199 shops graded A or B for Retatrutide; 122 shops graded D or E.

  • 78%of Retatrutide tests passed; median purity 99.89%
  • 24%of vials held more than 5% less Retatrutide than the label
  • Most common failurepurity under 99.5% (555 tests). In 301 vials the lab could not confirm it was Retatrutide at all.
  • Last 90 days874 tests from 261 shops, 219 failed. Newest result Oct 14, 2026.

Retatrutide vendors ranked by lab record

The grade is for Retatrutide 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.

VendorGradeTestsPassedMedian purityUnder-filledLast test
ZLZ PeptideLast failure Oct 12, 2026: purity under 99.5%A114103/11399.89%18/109Oct 12, 2026
LipeptidesLast failure Aug 2, 2026: the lab could not confirm it was the labelled peptideA3632/3599.90%7/34Oct 6, 2026
Peptide PartnersPayment problems reportedLast failure Nov 17, 2025: purity under 99.5%A3231/3299.90%19/32Oct 14, 2026
SRY LabsLast failure Jan 29, 2026: the lab could not confirm it was the labelled peptideA3230/3299.85%6/31Sep 24, 2026
Orbitrex PeptidesLast failure Oct 23, 2025: purity under 99.5%A2422/2399.90%2/23Sep 24, 2026
SaiyanMedLast failure Nov 17, 2025: purity under 99.5%A2420/2199.90%8/21Sep 24, 2026
Huayi BiotechnologyWebsite homepage returns 404Last failure Oct 21, 2025: purity under 99.5%A2320/2299.90%5/22Sep 30, 2026
Nantong Guangyuan Chemical GYCLast failure Nov 3, 2025: amount in the vial more than 35% off the labelA2221/2299.90%4/22Oct 14, 2026
Marvel PepLast failure Jul 13, 2026: purity under 99.5%A2018/1999.80%3/19Sep 24, 2026
Chimera PeptidesA1515/1599.90%3/15Sep 15, 2026
Allen Biotechnology Co ABCA1414/1499.90%2/14Aug 3, 2026
Andy Peps StudioLast failure Aug 12, 2025: purity under 99.5%A1413/1499.90%2/14Sep 16, 2026
HomopeptideLast failure Sep 16, 2026: purity under 99.5%A1413/1499.90%4/14Oct 12, 2026
Peptide Pole HongkongLast failure Jun 8, 2026: the lab could not confirm it was the labelled peptideA1410/1199.90%1/10Sep 14, 2026
ZhuoYan labNo working storefront foundLast failure Aug 4, 2025: purity under 99.5%A1413/1499.70%1/14Sep 30, 2026
Top PeptideLast failure Aug 13, 2026: amount in the vial more than 35% off the labelA1312/1399.88%5/13Aug 13, 2026
Zhuoyue BiotechnologyLast failure Jan 19, 2026: purity under 99.5%A1311/1299.80%3/12Oct 6, 2026
Paramount PeptidesLast failure Feb 28, 2025: purity under 99.5%A1211/1299.85%1/12Dec 6, 2025
NovaPeptideLast failure Sep 16, 2026: purity under 99.5%A1110/1199.90%6/11Oct 12, 2026
RetaluxA1111/1199.90%2/11Oct 6, 2026
Amino LairA1010/1099.90%3/10Jul 20, 2026
Crush ResearchA1010/1099.80%2/10Oct 14, 2026
Atomik LabzA99/999.90%1/9Aug 12, 2026
GGPepsA99/999.90%2/9Oct 12, 2026
NextechLabsA99/999.75%1/9Aug 9, 2026
Baoju ChemicalA88/899.89%2/8May 28, 2026
Lejian Biotech PeptideA88/899.90%0/8Jul 17, 2026
Paradigm PeptideA87/799.95%0/7Apr 30, 2026
SPBA88/899.90%1/8Sep 24, 2026
YB PeptideA88/899.90%1/8Apr 28, 2026
371 more shops with Retatrutide tests

Recent failed Retatrutide 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.

Retatrutide 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.

  • Peptide PartnersPayment problems reported (Finnrick) · last Retatrutide test Oct 14, 2026
  • Huayi BiotechnologyWebsite homepage returns 404 (Our site check) · last Retatrutide test Sep 30, 2026
  • ZhuoYan labNo working storefront found (Finnrick) · last Retatrutide test Sep 30, 2026
  • FSDNo working storefront found (Finnrick) · last Retatrutide test Aug 6, 2026
  • Shenzhen Jiechuang TradingNo working storefront found (Finnrick) · last Retatrutide test Oct 9, 2026
  • Quzhou Kecheng Jitai Trading FirmNo working storefront found (Finnrick) · last Retatrutide test Mar 19, 2026
  • TCINo working storefront found (Finnrick) · last Retatrutide test Oct 17, 2025
  • Peptide WorldwideDeactivated (Finnrick) · last Retatrutide test May 6, 2025
  • Regenerative ResearchNo working storefront found (Finnrick) · last Retatrutide test Jun 20, 2025
  • YimeiNo working storefront found (Finnrick) · last Retatrutide test Oct 14, 2026
  • HXNetNo working storefront found (Finnrick) · last Retatrutide test Oct 12, 2026
  • EHZ PeptidesNo working storefront found (Finnrick) · last Retatrutide test Oct 6, 2026
  • Xingruida XDRWebsite homepage returns 500 (Our site check) · last Retatrutide test Aug 12, 2026
  • Hebei Rimao TechnologyWebsite domain does not resolve (Our site check) · last Retatrutide test Jun 26, 2026
  • Shenzhen Loga Tech LG LOGAWebsite domain does not resolve (Our site check) · last Retatrutide test Jul 17, 2026
  • Tianjin Ruiwang New Material Technology CoWebsite domain does not resolve (Our site check) · last Retatrutide test Oct 6, 2026
  • Yongkang Nuoao Trading CoNo working storefront found (Finnrick) · last Retatrutide test Mar 3, 2026
  • Kerisite Shenzhen InternationalNo working storefront found (Finnrick) · last Retatrutide test May 15, 2026
  • Quenna PMQNo working storefront found (Finnrick) · last Retatrutide test Sep 24, 2026
  • Checkmate PeptidesNo products for sale (Finnrick) · last Retatrutide test Jul 1, 2026
  • HybiopeptidesNo working storefront found (Finnrick) · last Retatrutide test Jul 20, 2026
  • Alimo PeptideWebsite domain does not resolve (Our site check) · last Retatrutide test Oct 13, 2025
  • Peptide ShopWebsite domain does not resolve (Our site check) · last Retatrutide test Aug 2, 2026
  • Sunrise BioResearchNo working storefront found (Finnrick) · last Retatrutide test Sep 16, 2026

The full list is on closed peptide vendors.

Before you order Retatrutide

  • Look at the shop's grade for Retatrutide, not its average. LiliPeptide has the most Retatrutide tests (155); a shop with one or two tests has not shown it is consistent.
  • 93% 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.
  • 10 labs tested them, mostly Krause Analytical and BTLabs. 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.