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Tirzepatide(GLP-1 and GIP antagonist)

We've tested 140 samples of Tirzepatide sourced from 25 vendors between 17 Dec 2024 and 7 May 2025. Purity varies from 96.46% to 899.72%, and quantity can diverge by up to +/-84% vs advertised value.

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Vendors

Tests
Vendor
Rating
CountAvgMinMaxOldestMost Recent
Polaris PeptidesPolaris Peptides
A
Great
139.07.410.017 Dec 20247 May 2025
Simple PeptideSimple Peptide
A
Great
48.96.710.025 Apr 20257 May 2025
Eternal PeptidesEternal Peptides
A
Great
28.48.38.57 May 20257 May 2025
Atomik LabzAtomik Labz
A
Great
48.48.38.66 May 20257 May 2025
Skye PeptidesSkye Peptides
A
Great
78.27.38.817 Dec 20247 May 2025
Nuscience PeptidesNuscience Peptides
A
Great
28.18.08.27 May 20257 May 2025
Pure RawzPure Rawz
A
Great
27.77.77.77 May 20257 May 2025
Planet PeptidePlanet Peptide
A
Great
87.46.48.317 Dec 20247 May 2025
Verified PeptidesVerified Peptides
A
Great
47.27.07.513 Feb 202519 Feb 2025
Coastal PeptidesCoastal Peptides
A
Great
57.16.57.927 Feb 202520 Mar 2025
PurePeptidesPurePeptides
A
Great
47.06.67.827 Feb 202520 Mar 2025
Forever Young PharmacyForever Young Pharmacy
B
Good
36.95.88.02 Apr 20252 Apr 2025
Alpha-GenAlpha-Gen
B
Good
46.86.57.024 Apr 202529 Apr 2025
Oasis PeptidesOasis Peptides
B
Good
66.15.26.814 Jan 202513 Feb 2025
Peptide SciencesPeptide Sciences
C
Okay
96.54.77.728 Mar 20257 May 2025
Loti LabsLoti Labs
C
Okay
106.44.28.016 Mar 20257 May 2025
NextechLabsNextechLabs
C
Okay
66.25.07.314 Jan 202520 Mar 2025
Amino AsylumAmino Asylum
C
Okay
25.84.67.014 Feb 202519 Feb 2025
Peptide CraftersPeptide Crafters
C
Okay
55.84.27.817 Dec 202420 Mar 2025
Royal PeptidesRoyal Peptides
C
Okay
65.44.26.516 Mar 202525 Mar 2025
TydesTydes
C
Okay
105.44.66.217 Dec 202430 Apr 2025
Paramount PeptidesParamount Peptides
D
Poor
96.93.68.914 Jan 20257 May 2025
Suaway Lab ResearchSuaway Lab Research
D
Poor
24.24.24.228 Mar 202528 Mar 2025
Amino AmigosAmino Amigos
E
Bad
74.03.74.614 Jan 202520 Mar 2025
Peptide GurusPeptide Gurus
E
Bad
63.32.24.416 Mar 202525 Mar 2025

Most recent Tirzepatide tests

Samples are tested in commercial labs

Quantity
Test DateVendorCertificate
Test Score
LabelTestedDifferencePurityBatch IDContainerTested AtSent By
7 May 2025Peptide SciencesView4.710mg7.790mg-22.1%98.73%TIR7920250124-10White, Orange Label / Blue Crimp / Clear Blue CapLab EFinnrick
7 May 2025Loti LabsView4.25mg4.416mg-11.7%99.04%(no batch ID)White Label / Silver Crimp / Black CapLab CFinnrick
7 May 2025Pure RawzView7.710mg8.584mg-14.2%899.72% PRZ-TIRZWhite Label / Silver Crimp / Red CapLab CFinnrick
7 May 2025Eternal PeptidesView8.310mg10.500mg+5.0%99.14%TIRZ042024-02-5White Label / Silver Crimp / Green CapsLab EFinnrick
7 May 2025Eternal PeptidesView8.510mg10.300mg+3.0%99.23%TIRZ042024-02-5White Label / Silver Crimp / Green CapsLab EFinnrick
7 May 2025Pure RawzView7.710mg8.763mg-12.4%99.79% PRZ-TIRZWhite Label / Silver Crimp / Red CapLab CFinnrick
7 May 2025Loti LabsView7.810mg9.480mg-5.2%99.83%(no batch ID)White Label / Silver Crimp / Purple CapLab CFinnrick

Corrections

17 Apr 2025: NextechLabs
Lab A test 27 Feb 2025, lab C test 28 Feb 2025, lab B test 30 Mar 2025: updated batch claim quantity, label claim was clear, erroneously listed 10mg.