Home / Tools / Purity Comparison

Peptide Purity Comparison Tool

Compare peptide purity across brands using real third-party lab tests from Peptigrity — with the test spread (not just an average) and net peptide content (how many mg are actually in the vial), both computed from the lab database. Built on independent tests: no test can be paid for, hidden, or removed.

Sort by
215Brands compared
1025Tests on file
99.97%Top avg purity
All Retatrutide lab tests →
Brand / shopAvg HPLC puritySpreadNet contentLast tested
Vantyx Research1 test only99.97%Excellent1 test99.97%105%of labelMar 9, 2026View →
Power Peptides1 test only99.95%Excellent1 test99.95%94%of labelNov 21, 2024View →
Evolabs Research99.95%Excellent4 tests99.93–99.98%115%of labelMar 31, 2026View →
Simple Peptide99.94%Excellent7 tests99.91–99.96%124%of labelSep 25, 2025View →
Coastal Peptides1 test only99.94%Excellent1 test99.94%106%of labelFeb 17, 2026View →
Peptide Pro Shop1 test only99.94%Excellent1 test99.94%101%of labelDec 8, 2025View →
Vylix Research99.94%Excellent2 tests99.91–99.96%116%of labelApr 21, 2026View →
semathin1 test only99.93%Excellent1 test99.93%120%of labelAug 15, 2025View →
PeptidePlugs99.93%Excellent5 tests99.87–99.97%107%of labelApr 12, 2026View →
Prosperity Peptides99.93%Excellent2 tests99.93–99.93%126%of labelFeb 21, 2026View →
Trulab Peptides1 test only99.93%Excellent1 test99.93%127%of labelJun 18, 2026View →
Rescue Research USA99.93%Excellent4 tests99.91–99.96%125%of labelMay 17, 2026View →
Riptide Wellness99.93%Excellent2 tests99.9–99.96%102%of labelMar 18, 2026View →
ThreeSide Peptides99.92%Excellent5 tests99.84–99.95%102%of labelFeb 18, 2026View →
AMINOVA Research Supply99.92%Excellent2 tests99.91–99.93%114%of labelMar 26, 2026View →
Ascension Peptides99.91%Excellent2 tests99.88–99.94%117%of labelJan 28, 2026View →
Simple Peptides99.9%Excellent2 tests99.9–99.91%120%of labelSep 25, 2025View →
LuvionBio99.9%Excellent2 tests99.9–99.91%110%of labelMar 22, 2026View →
Regenerative Research99.9%Excellent7 tests99.75–99.95%110%of labelMar 2, 2026View →
Omega Peptides1 test only99.9%Excellent1 test99.9%109%of labelMar 16, 2026View →
VRIL Peptides1 test only99.89%Excellent1 test99.89%106%of labelMar 27, 2026View →
Vera Peptides99.89%Excellent2 tests99.84–99.94%110%of labelApr 7, 2026View →
IRON Peptides99.89%Excellent3 tests99.84–99.95%108%of labelJan 15, 2026View →
NeuroLabs Research1 test only99.88%Excellent1 test99.88%97%of labelJan 24, 2026View →
Panda Peptides1 test only99.88%Excellent1 test99.88%117%of labelMay 6, 2026View →
biopeptitech.com99.88%Excellent4 tests99.75–99.96%106%of labelMar 12, 2026View →
americanpeptides.us99.88%Excellent5 tests99.8–99.9%102%of labelJul 7, 2026View →
Chameleon Peptides1 test only99.87%Excellent1 test99.87%117%of labelMay 6, 2026View →
Research Peptides Lab99.87%Excellent4 tests99.72–99.97%100%of labelJan 1, 2025View →
DS Research Peptides1 test only99.87%Excellent1 test99.87%109%of labelMar 31, 2026View →
Peptide Pro Canada99.87%Excellent3 tests99.82–99.94%110%of labelApr 10, 2026View →
Amino Club99.86%Excellent2 tests99.79–99.93%107%of labelFeb 7, 2026View →
mspeptides.com99.86%Excellent8 tests99.66–99.97%115%of labelJun 24, 2026View →
ezpeps.com99.86%Excellent12 tests99.79–99.92%111%of labelJun 9, 2026View →
Real Peptides1 test only99.85%Excellent1 test99.85%117%of labelMar 5, 2026View →
Crush Research Supply99.85%Excellent12 tests99.61–99.96%114%of labelApr 4, 2026View →
Orbitrex Peptides99.85%Excellent11 tests99.69–99.96%111%of labelMay 9, 2026View →
Instant Peptides99.85%Excellent4 tests99.69–99.93%112%of labelMay 17, 2026View →
Alpha Peptides99.85%Excellent5 tests99.67–99.97%114%of labelMay 26, 2026View →
Peptide Supply Co99.84%Excellent6 tests99.59–99.95%108%of labelMar 19, 2026View →
KÖLD99.84%Excellent3 tests99.59–100%101%of labelMar 6, 2026View →
badgercompounds.com1 test only99.84%Excellent1 test99.84%117%of labelMay 11, 2026View →
Thrive Peptides99.83%Excellent8 tests99.66–99.95%112%of labelMar 25, 2026View →
IonPeptide99.83%Excellent25 tests99.62–99.98%108%of labelMar 18, 2026View →
Valor Peptides99.83%Excellent11 tests99.52–100%112%of labelApr 21, 2026View →
Elite Research USA99.83%Excellent3 tests99.61–99.94%116%of labelApr 14, 2026View →
Blank Peptides99.83%Excellent6 tests99.48–99.96%108%of labelMay 19, 2026View →
Humatide LLC1 test only99.83%Excellent1 test99.83%107%of labelJun 27, 2026View →
lapeptides.net99.83%Excellent11 tests99.61–99.9%105%of labelJun 15, 2026View →
Prime Lab Peptides99.82%Excellent3 tests99.63–99.96%128%of labelFeb 3, 2026View →
Primal Peptides99.82%Excellent2 tests99.75–99.88%116%of labelJan 6, 2026View →
OROS Research99.82%Excellent3 tests99.72–99.96%121%of labelOct 4, 2025View →
Trusted Peptides1 test only99.82%Excellent1 test99.82%140%of labelFeb 3, 2026View →
NuRev Peptides99.82%Excellent3 tests99.78–99.84%126%of labelFeb 22, 2026View →
Felix Chemical Supply99.82%Excellent22 tests99.47–99.99%107%of labelMar 5, 2026View →
Peptidex1 test only99.82%Excellent1 test99.82%100%of labelJan 22, 2026View →
Lumin Research1 test only99.82%Excellent1 test99.82%94%of labelJan 6, 2026View →
Protide Health99.82%Excellent14 tests99.43–99.95%118%of labelMay 30, 2026View →
modernresearchpeptides.net99.82%Excellent7 tests99.66–99.93%111%of labelJun 24, 2026View →
Optima Supply1 test only99.81%Excellent1 test99.81%111%of labelJul 22, 2025View →
Humatide1 test only99.81%Excellent1 test99.81%105%of labelJun 27, 2026View →
Certified Peptides99.8%Excellent3 tests99.8–99.8%106%of labelFeb 23, 2026View →
Mile High Compounds1 test only99.8%Excellent1 test99.8%107%of labelMar 9, 2026View →
Particle Peptides99.8%Excellent3 tests99.8–99.8%96%of labelMar 26, 2026View →
Empower Peptides99.8%Excellent8 tests99.51–99.92%114%of labelApr 20, 2026View →
GoAlpha Labs99.8%Excellent11 tests99.61–99.97%124%of labelApr 12, 2026View →
Arcane Peptides1 test only99.8%Excellent1 test99.8%101%of labelMar 24, 2026View →
VANDL Labs99.8%Excellent2 tests99.8–99.8%108%of labelMar 30, 2026View →
NUPEPS Peptides99.8%Excellent3 tests99.8–99.8%106%of labelJan 18, 2026View →
Noble Chems99.8%Excellent2 tests99.8–99.8%101%of labelMar 29, 2026View →
Regenorix1 test only99.8%Excellent1 test99.8%102%of labelFeb 23, 2026View →
Good Science1 test only99.8%Excellent1 test99.8%116%of labelJun 12, 2026View →
Zen Aminos99.8%Excellent21 tests99.31–99.97%106%of labelJun 4, 2026View →
Simon's Compounding1 test only99.8%Excellent1 test99.8%110%of labelFeb 26, 2026View →
Research Peptides Europe1 test only99.8%Excellent1 test99.8%102%of labelSep 25, 2025View →
Excalibur Peptides1 test only99.8%Excellent1 test99.8%102%of labelMay 18, 2026View →
adriascience.com99.8%Excellent2 tests99.8–99.8%97%of labelJun 8, 2026View →
Adria Science1 test only99.8%Excellent1 test99.8%101%of labelMay 28, 2026View →
Vertex Labs99.8%Excellent3 tests99.7–99.9%111%of labelJun 29, 2026View →
globalaminos.com peptides99.8%Excellent3 tests99.67–99.96%115%of label · 2 of 3Jul 13, 2026View →
saiyanmed.com99.8%Excellent2 tests99.74–99.86%99%of labelFeb 5, 2026View →
Sigma Audley (SSA)1 test only99.8%Excellent1 test99.8%112%of labelJun 11, 2025View →
Penguin Peptides99.79%Excellent7 tests99.58–99.88%103%of labelJan 20, 2026View →
NG Peptide1 test only99.79%Excellent1 test99.79%122%of labelFeb 25, 2026View →
NELA Peptides99.79%Excellent4 tests99.61–99.98%105%of labelFeb 27, 2026View →
Peptira99.79%Excellent25 tests99.26–99.98%123%of labelFeb 21, 2026View →
Everest Peptides1 test only99.79%Excellent1 test99.79%106%of labelMar 10, 2026View →
Pura Peptide99.78%Excellent18 tests99.19–99.99%108%of labelMar 9, 2026View →
Simply Peptides1 test only99.78%Excellent1 test99.78%96%of labelMay 27, 2026View →
BulkGLP99.78%Excellent11 tests99.5–99.98%109%of labelMay 30, 2026View →
researchchemhq.co99.78%Excellent8 tests99.39–99.95%107%of labelJun 4, 2026View →
cosmicpeptides.com99.78%Excellent4 tests99.7–99.8%103%of labelFeb 26, 2026View →
MyPure Peptide1 test only99.77%Excellent1 test99.77%105%of labelJul 9, 2025View →
Glacier Aminos99.77%Excellent17 tests99.1–99.97%106%of labelMar 28, 2026View →
24PEPTIDES99.77%Excellent10 tests99.6–99.8%106%of labelMay 20, 2026View →
NuScience Peptides99.76%Excellent4 tests99.64–99.89%119%of labelMar 3, 2026View →
Purity Peptides1 test only99.76%Excellent1 test99.76%103%of labelApr 30, 2026View →
Neovia Peptides99.76%Excellent2 tests99.75–99.78%108%of labelSep 18, 2025View →
Bluum Peptides99.76%Excellent10 tests99.43–99.97%103%of labelJun 12, 2026View →
AS-RT501 test only99.76%Excellent1 test99.76%106%of labelJul 9, 2026View →
Amino Amigos99.75%Excellent3 tests99.45–99.98%108%of labelMar 10, 2025View →
Reta One Labs99.75%Excellent19 tests99.3–99.99%111%of labelApr 13, 2026View →
AS-RT601 test only99.75%Excellent1 test99.75%104%of labelJul 9, 2026View →
SRY99.75%Excellent2 tests99.7–99.81%115%of labelJun 24, 2025View →
NextGen Peptides99.74%Excellent20 tests99.04–99.97%116%of labelFeb 28, 2026View →
Peptide Pro99.74%Excellent3 tests99.29–99.98%206%of labelOct 31, 2025View →
Lab Trust Peptides1 test only99.74%Excellent1 test99.74%174%of labelFeb 28, 2025View →
Peptify UK1 test only99.74%Excellent1 test99.74%109%of labelMay 7, 2026View →
Rivn Research99.74%Excellent3 tests99.53–99.89%102%of labelApr 5, 2026View →
NEOPEPS1 test only99.74%Excellent1 test99.74%110%of labelMar 17, 2026View →
Loti Labs99.73%Excellent4 tests99.7–99.76%110%of labelMar 2, 2026View →
Nova Peptide Supply99.73%Excellent13 tests98.94–99.98%106%of labelMay 1, 2026View →
BioBoostX1 test only99.73%Excellent1 test99.73%104%of labelJan 20, 2026View →
Chimera Peptides99.73%Excellent7 tests99.43–99.9%107%of labelJan 22, 2026View →
onedaycompounds.com99.73%Excellent12 tests99.05–99.92%104%of labelJun 20, 2026View →
Petratide Science99.72%Excellent15 tests99.32–99.97%114%of labelMay 18, 2026View →
virtuspeptides.com99.72%Excellent2 tests99.62–99.81%105%of labelJul 1, 2026View →
Omegamino99.71%Excellent3 tests99.62–99.87%101%of labelApr 8, 2026View →
aminovault.com99.71%Excellent2 tests99.64–99.77%104%of labelJun 30, 2026View →
Hydro Research Peptides99.7%Excellent10 tests99.26–99.98%113%of labelJul 30, 2025View →
Peptidology99.7%Excellent6 tests99.17–99.8%106%of labelMar 31, 2026View →
Wolverine Peptides99.7%Excellent13 tests99.19–99.95%118%of labelMay 17, 2026View →
SRYLAB99.7%Excellent9 tests99.59–99.88%120%of labelSep 9, 2025View →
Aminos Research99.7%Excellent3 tests99.56–99.85%112%of labelNov 12, 2025View →
SG Peptide1 test only99.69%Excellent1 test99.69%119%of labelFeb 22, 2026View →
Optima Chemical Supply Inc.99.69%Excellent2 tests99.55–99.83%108%of labelJul 30, 2025View →
Licensed Peptides99.68%Excellent13 tests99.03–99.8%112%of labelJan 28, 2026View →
Purified Peptide99.68%Excellent4 tests99.51–99.82%116%of labelJan 19, 2026View →
Sterling Peptides99.68%Excellent3 tests99.41–99.88%111%of labelJun 15, 2026View →
Profound Aminos99.67%Excellent26 tests98.86–99.99%117%of labelMay 4, 2026View →
Qing Li Peptide1 test only99.66%Excellent1 test99.66%104%of labelMar 21, 2025View →
Synthesis Peptides99.66%Excellent6 tests98.86–99.96%121%of labelMay 24, 2026View →
blueskypeptide.com1 test only99.66%Excellent1 test99.66%Jun 18, 2026View →
Aavant (ACR)99.66%Excellent3 tests99.24–99.93%116%of labelMay 26, 2026View →
Optima Chemical supply99.65%Excellent5 tests99.29–99.92%113%of labelApr 28, 2025View →
NOVA Labs1 test only99.65%Excellent1 test99.65%112%of labelApr 13, 2026View →
marvel-peptide.com1 test only99.65%Excellent1 test99.65%112%of labelOct 25, 2025View →
BleauGenics99.64%Excellent2 tests99.57–99.71%109%of labelMay 2, 2025View →
Rhome Research99.64%Excellent2 tests99.6–99.69%102%of labelJun 22, 2026View →
Glowing Peptides1 test only99.64%Excellent1 test99.64%107%of labelFeb 12, 2026View →
BetterBio Synthesis1 test only99.64%Excellent1 test99.64%104%of labelOct 3, 2025View →
Peptide Koning99.64%Excellent5 tests99.22–99.89%108%of labelFeb 17, 2026View →
Modern Aminos99.63%Excellent5 tests99.24–99.87%118%of labelFeb 20, 2026View →
AMP99.63%Excellent6 tests99.27–99.84%115%of labelJul 2, 2026View →
studzpeptides.com99.63%Excellent8 tests99.22–99.94%106%of labelJun 28, 2026View →
ascensionpeptides.com99.63%Excellent4 tests98.86–99.94%112%of labelMay 21, 2026View →
Mile High Compounds99.62%Excellent5 tests99.09–99.8%106%of labelMar 9, 2026View →
Royal Peptides99.62%Excellent14 tests99.11–99.95%117%of labelApr 1, 2026View →
Proxiva Labs1 test only99.62%Excellent1 test99.62%111%of labelFeb 7, 2026View →
AS-RT301 test only99.62%Excellent1 test99.62%106%of labelJul 9, 2026View →
Soma Chems99.61%Excellent2 tests99.29–99.92%111%of labelFeb 16, 2026View →
Astra Peptides99.61%Excellent2 tests99.58–99.64%101%of labelJan 27, 2026View →
perfectpeptides.com99.61%Excellent5 tests99.15–99.9%105%of labelMay 30, 2026View →
honestpeptide.com99.61%Excellent2 tests99.54–99.67%123%of labelApr 15, 2026View →
Skye Peptides99.6%Excellent22 tests99.28–99.9%115%of labelMar 5, 2026View →
Prime Peptides99.6%Excellent2 tests99.38–99.82%101%of labelMar 5, 2026View →
modifiedaminos.shop peptides99.6%Excellent5 tests99–99.8%105%of labelJun 8, 2026View →
EvoLabs Research99.59%Excellent5 tests99.03–99.91%106%of labelDec 1, 2025View →
HkRoids99.59%Excellent17 tests98.59–99.95%115%of labelMar 3, 2026View →
Peptide Crafters99.58%Excellent27 tests98.73–99.86%112%of labelMar 12, 2026View →
Grey Market Peptides99.58%Excellent2 tests99.29–99.88%128%of labelFeb 16, 2026View →
AminoForge99.58%Excellent4 tests99.21–99.92%106%of labelMar 11, 2026View →
ezpeptides.com99.58%Excellent4 tests99.28–99.81%115%of labelJul 2, 2026View →
aavantpeptides.com99.58%Excellent10 tests99.18–99.98%114%of labelMar 26, 2026View →
RC Peptides99.57%Excellent2 tests99.32–99.81%134%of labelMay 6, 2026View →
Priority Peptides1 test only99.57%Excellent1 test99.57%92%of labelOct 16, 2024View →
Life Peptide1 test only99.57%Excellent1 test99.57%109%of labelMay 7, 2026View →
AS-RT201 test only99.57%Excellent1 test99.57%103%of labelJul 9, 2026View →
Polaris Peptides99.56%Excellent15 tests99.02–99.95%114%of labelMar 3, 2026View →
Peptidic99.56%Excellent2 tests99.36–99.76%120%of labelAug 12, 2025View →
Atomik Labz99.55%Excellent20 tests99.03–99.85%105%of labelMar 29, 2026View →
Nuscience Peptides1 test only99.54%Excellent1 test99.54%125%of labelFeb 12, 2026View →
Research Ready Peptides1 test only99.54%Excellent1 test99.54%108%of labelNov 13, 2025View →
Coffee and Peppers99.53%Excellent11 tests98.59–99.94%108%of labelApr 21, 2026View →
Nextday Sciences99.53%Excellent2 tests99.18–99.88%112%of labelFeb 12, 2026View →
cernumbiosciences.com1 test only99.53%Excellent1 test99.53%97%of labelNov 3, 2025View →
Luxara Research Company99.52%Excellent3 tests99.47–99.56%110%of labelFeb 5, 2026View →
ignitepeptides.com1 test only99.52%Excellent1 test99.52%110%of labelJun 8, 2025View →
crownwellresearch.com99.51%Excellent3 tests99.09–99.78%113%of labelFeb 14, 2026View →
Eternal Peptides99.5%Excellent2 tests99.36–99.64%120%of labelDec 3, 2025View →
Peak Peptides99.5%Excellent6 tests99.4–99.7%114%of labelApr 12, 2026View →
XL Peptides99.5%Excellent2 tests99.11–99.89%107%of labelApr 21, 2026View →
Growth Guys99.5%Excellent16 tests98.51–99.93%107%of labelMar 23, 2026View →
Gentleman Peptides1 test only99.5%Excellent1 test99.5%105%of labelFeb 14, 2026View →
Peptide Partners99.49%Excellent10 tests98.98–99.72%116%of labelApr 16, 2026View →
Peppy&Me99.48%Excellent4 tests99.2–99.8%118%of labelApr 9, 2026View →
Peptide Hackers1 test only99.47%Excellent1 test99.47%108%of labelJan 26, 2026View →
Xeno Peptides1 test only99.47%Excellent1 test99.47%115%of labelOct 6, 2025View →
liliPetide Technology Co., Ltd.1 test only99.47%Excellent1 test99.47%116%of labelJun 23, 2026View →
Strate Labs99.44%Excellent2 tests99.4–99.47%111%of labelNov 13, 2025View →
TNN Peptides1 test only99.42%Excellent1 test99.42%111%of labelAug 7, 2025View →
Next Generation Compounds99.41%Excellent2 tests99.25–99.57%114%of labelJan 23, 2026View →
Amino Lair1 test only99.41%Excellent1 test99.41%106%of labelMar 5, 2026View →
Disguised Alpha99.38%Excellent4 tests97.98–99.97%112%of labelMay 17, 2026View →
utherpeptide.com99.38%Excellent2 tests99.19–99.58%117%of labelSep 18, 2025View →
Direct Peptides99.37%Excellent2 tests99.32–99.42%111%of labelMar 14, 2026View →
Alpha Carbon Labs1 test only99.37%Excellent1 test99.37%107%of labelDec 1, 2025View →
AS-RT101 test only99.35%Excellent1 test99.35%106%of labelJul 9, 2026View →
CertaPeptides1 test only99.34%Excellent1 test99.34%134%of labelJun 19, 2026View →
Tydes99.33%Excellent2 tests99.31–99.35%113%of labelJan 27, 2026View →
Bulk Peptide Supply99.31%Excellent2 tests98.81–99.8%102%of labelSep 27, 2025View →
Elutide99.31%Excellent8 tests98.69–99.68%102%of labelJun 8, 2026View →
Omega Peptides Australia1 test only99.31%Excellent1 test99.31%127%of labelJul 31, 2025View →
NovaCell Peptides99.3%Excellent2 tests98.8–99.8%105%of labelApr 20, 2026View →
VPEX Online1 test only99.29%Excellent1 test99.29%113%of labelMay 4, 2026View →
NEXAPH1 test only99.23%Excellent1 test99.23%119%of labelFeb 9, 2026View →
Oupeptide1 test only99.17%Excellent1 test99.17%113%of labelApr 28, 2025View →
volterasciences.com1 test only99.15%Excellent1 test99.15%106%of labelJun 5, 2026View →
Kensington Labs1 test only99.08%Excellent1 test99.08%108%of labelJul 9, 2025View →
Pure Peptides1 test only99.06%Excellent1 test99.06%113%of labelMar 12, 2026View →
Honest Peptide1 test only99.02%Excellent1 test99.02%114%of labelMar 31, 2026View →
Stratford Peptides99%Excellent2 tests99–99%102%of labelFeb 27, 2026View →
Evolve BioPep98.6%Research grade3 tests98–99.8%102%of labelApr 12, 2026View →
Instant Peptides98.04%Research grade20 tests64.06–99.98%114%of labelMar 24, 2026View →
PEPTIDE Power1 test only94.75%Below standard1 test94.75%107%of labelNov 4, 2025View →
What is net peptide content — and why isn't purity enough?

Purity is the percentage of the sample that's the target peptide. Net content is how many milligrams of actual peptide are in the vial after water, salts, and solvents. A vial can be 99% pure but contain far less peptide than its label says — net content is the number that determines your real dose. A 99%-pure vial at 60% of label is worse than a 97%-pure vial at 105%.

Learn more in how peptide testing works.

Why Purity Matters

Peptide purity is one of the most important quality indicators. Higher purity means fewer impurities, degradation products, and potential contaminants. Third-party lab testing by independent laboratories provides the most reliable purity data — more trustworthy than vendor-provided certificates.

But purity alone doesn't tell the whole story. Always check the test count. Eight tests all landing at 99%+ is far stronger evidence than a single test at 99.9% — which is why this tool shows the spread and flags single-test brands.

What the Purity Numbers Mean

HPLC Purity

HPLC separates a peptide sample into its individual components and measures the proportion that is the target peptide versus impurities. 99% purity means 99% of the sample is the target peptide.

Purity RangeClassificationTypical Use Case
≥ 99%ExcellentQuantitative research, sensitive assays
98–98.9%Research gradeGeneral research applications
95–97.9%MarginalScreening, preliminary research only
< 95%Below standardNot suitable for most applications

How Peptigrity Collects Lab Test Data

Results come from independently commissioned tests (samples purchased anonymously and tested blind), verified community-submitted reports, and vendor-submitted third-party results — all linked to the original lab documentation. No test can be paid for, hidden, or removed, the same independence promise as the Trust Score. For guidance on commissioning your own test, see how to get your peptides independently tested.

This tool is for educational and informational purposes only and does not constitute medical advice. Peptides discussed may be investigational compounds not approved by the FDA for human use. Peptigrity is an independent review platform and does not sell, endorse, or recommend specific products or vendors.

Related Tools

Related Peptides