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

Lab records by peptide

Tirzepatide vendors

Vendors that sell Tirzepatide, ranked by what independent labs found in their vials: 2,819 tests across 272 shops since December 2024. 139 shops graded A or B for Tirzepatide; 79 shops graded D or E.

  • 78%of Tirzepatide tests passed; median purity 99.85%
  • 20%of vials held more than 5% less Tirzepatide than the label
  • Most common failurepurity under 99.5% (371 tests). In 133 vials the lab could not confirm it was Tirzepatide at all.
  • Last 90 days354 tests from 145 shops, 96 failed. Newest result Oct 14, 2026.

Tirzepatide vendors ranked by lab record

The grade is for Tirzepatide 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
SRY LabsLast failure Sep 1, 2025: purity under 99.5%A3634/3699.85%2/36Jul 20, 2026
PeptiSlimLast failure Mar 4, 2026: purity under 99.5%A3229/3299.89%5/31Sep 5, 2026
Yiwu Aozuo Trading CoLast failure Sep 16, 2026: purity under 99.5%; amount in the vial more than 35% off the labelA3129/3199.88%4/31Sep 16, 2026
Nantong Guangyuan Chemical GYCLast failure Feb 26, 2026: purity under 99.5%A2523/2599.90%3/25Oct 14, 2026
Andy Peps StudioA1919/1999.90%5/19Oct 6, 2026
Guangzhou Jeep Biotechnology JEEPLast failure Mar 4, 2026: purity under 99.5%A1614/1599.90%2/15Aug 4, 2026
Aavant ResearchA1515/1599.90%1/15Sep 17, 2026
Shanghai Wibson Biotechnology WBSLast failure Jun 9, 2025: purity under 99.5%A1210/1199.90%3/11Aug 26, 2026
Huayi BiotechnologyWebsite homepage returns 404A1010/1099.90%2/10Jun 15, 2026
Paradigm PeptideA1010/1099.90%0/10Jan 26, 2026
TydesLast failure Apr 25, 2025: amount in the vial more than 35% off the labelA109/1099.88%0/10Apr 30, 2025
Amino LairA98/899.80%0/8Jun 6, 2026
Golden EagleA99/999.80%0/9Feb 20, 2026
Noble DragonsA99/999.90%0/9Aug 5, 2026
Guangdong Peptide Research BiotechnologyA84/499.90%0/4Aug 6, 2026
Jinan Elitepeptide Chemical JEC JCEA77/799.90%2/7Jul 20, 2026
SaiyanMedA77/799.80%3/7Sep 24, 2026
Baohua Dongnuo Biotechnology BHDA66/699.85%2/6Jul 13, 2026
DAHAN PeptideA65/599.80%1/5Aug 5, 2026
LMRA66/699.90%0/6Aug 28, 2026
PurePeptidesA66/699.80%1/6Sep 4, 2025
Xianhong Tong XHT PeptidesA66/699.79%0/6May 5, 2026
Atomik LabzA55/599.69%0/5Aug 3, 2026
Champion PeptideA55/599.80%0/5Oct 14, 2026
Flycn PeptideA55/599.90%4/5Aug 25, 2026
Marvel PepA55/599.85%1/5Sep 19, 2026
Qianmiao PeptideA55/599.90%1/5Jul 15, 2026
RetaluxA55/599.70%0/5Aug 3, 2026
Bio PepzA44/499.84%0/4Nov 17, 2025
Expert PeptideA44/499.90%1/4Aug 3, 2026
242 more shops with Tirzepatide tests

Recent failed Tirzepatide 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.

  • Novabio ResearchOct 14, 2026 · PharmLabs
    amount in the vial more than 35% off the label · purity 99.99% · fill -49.0% · Certificate
  • Sediao ChemicalOct 12, 2026 · BTLabs
    amount in the vial more than 35% off the label · purity 99.90% · fill -49.0% · Certificate
  • Sediao ChemicalOct 12, 2026 · BTLabs
    amount in the vial more than 35% off the label · purity 99.90% · fill -37.0% · Certificate
  • Sediao ChemicalOct 12, 2026 · BTLabs
    amount in the vial more than 35% off the label · purity 99.90% · fill -66.0% · Certificate
  • HomopeptideOct 12, 2026 · Krause Analytical
    the lab could not confirm it was the labelled peptide · Certificate
  • LP PeptideOct 8, 2026 · Krause Analytical
    the lab could not confirm it was the labelled peptide · Certificate

Tirzepatide 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.

  • Huayi BiotechnologyWebsite homepage returns 404 (Our site check) · last Tirzepatide test Jun 15, 2026
  • Sunrise BioResearchNo working storefront found (Finnrick) · last Tirzepatide test Jan 15, 2026
  • TCINo working storefront found (Finnrick) · last Tirzepatide test Dec 29, 2025
  • Glamgurcraft Innovations Foreign TradeWebsite domain does not resolve (Our site check) · last Tirzepatide test Jul 25, 2025
  • HazelNo working storefront found (Finnrick) · last Tirzepatide test Jun 13, 2025
  • HXNetNo working storefront found (Finnrick) · last Tirzepatide test Aug 12, 2026
  • EHZ PeptidesNo working storefront found (Finnrick) · last Tirzepatide test Oct 1, 2026
  • Shenzhen Jiechuang TradingNo working storefront found (Finnrick) · last Tirzepatide test Oct 14, 2026
  • Peptide PartnersPayment problems reported (Finnrick) · last Tirzepatide test Sep 24, 2026
  • YimeiNo working storefront found (Finnrick) · last Tirzepatide test May 19, 2026
  • Yongkang Nuoao Trading CoNo working storefront found (Finnrick) · last Tirzepatide test Mar 29, 2026
  • Tianjin Ruiwang New Material Technology CoWebsite domain does not resolve (Our site check) · last Tirzepatide test Aug 9, 2026
  • Xingruida XDRWebsite homepage returns 500 (Our site check) · last Tirzepatide test Aug 12, 2026
  • Quenna PMQNo working storefront found (Finnrick) · last Tirzepatide test Jun 1, 2026
  • Shenzhen Loga Tech LG LOGAWebsite domain does not resolve (Our site check) · last Tirzepatide test Jan 26, 2026
  • ZhuoYan labNo working storefront found (Finnrick) · last Tirzepatide test Sep 18, 2026
  • Hebei Rimao TechnologyWebsite domain does not resolve (Our site check) · last Tirzepatide test Jun 26, 2026
  • Alimo PeptideWebsite domain does not resolve (Our site check) · last Tirzepatide test May 11, 2026
  • Checkmate PeptidesNo products for sale (Finnrick) · last Tirzepatide test Jul 1, 2026
  • FSDNo working storefront found (Finnrick) · last Tirzepatide test May 6, 2026
  • HybiopeptidesNo working storefront found (Finnrick) · last Tirzepatide test Jun 15, 2026
  • Shandong Plateau New MaterialsNo working storefront found (Finnrick) · last Tirzepatide test Nov 5, 2025

The full list is on closed peptide vendors.

Before you order Tirzepatide

  • Look at the shop's grade for Tirzepatide, not its average. HK Peptides has the most Tirzepatide tests (134); a shop with one or two tests has not shown it is consistent.
  • 92% 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.
  • 12 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.

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