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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.

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254Brands compared

564Tests on file

99.99%Top avg purity

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Brand / shop	Avg HPLC purity	Spread	Net content	Last tested
peptide.partners1 test only	99.99%Excellent	1 test99.99%	100%of label	Jun 8, 2026	View →
Regenerative Research1 test only	99.95%Excellent	1 test99.95%	109%of label	Oct 19, 2025	View →
Prosperity Peptides1 test only	99.94%Excellent	1 test99.94%	131%of label	Feb 21, 2026	View →
Hydro Research Peptides1 test only	99.93%Excellent	1 test99.93%	108%of label	Mar 19, 2024	View →
Optima Chemical supply1 test only	99.93%Excellent	1 test99.93%	108%of label	Mar 19, 2024	View →
NeuroLabs Research1 test only	99.91%Excellent	1 test99.91%	116%of label	Feb 21, 2026	View →
Bulk Peptide Supply	99.9%Excellent	4 tests99.9–99.9%	100%of label	Aug 12, 2025	View →
americanpeptides.us1 test only	99.9%Excellent	1 test99.9%	113%of label	Apr 3, 2026	View →
curo.you1 test only	99.9%Excellent	1 test99.9%	105%of label	Jul 10, 2026	View →
myoasislabs peptides	99.9%Excellent	2 tests99.9–99.9%	102%of label	Jun 15, 2026	View →
Peptide Plugs	99.9%Excellent	2 tests99.88–99.91%	105%of label	Aug 19, 2026	View →
Real Peptides1 test only	99.89%Excellent	1 test99.89%	120%of label	Mar 5, 2026	View →
polarispeptides.com	99.89%Excellent	2 tests99.88–99.9%	118%of label	Jul 1, 2026	View →
aurora-peptides.com1 test only	99.88%Excellent	1 test99.88%	104%of label	Jul 15, 2026	View →
New Wave Peptides1 test only	99.87%Excellent	1 test99.87%	109%of label	Feb 13, 2026	View →
Regenerative Research peptides1 test only	99.87%Excellent	1 test99.87%	103%of label	Jul 31, 2026	View →
BleauGenics1 test only	99.86%Excellent	1 test99.86%	120%of label	May 29, 2024	View →
NuRev Peptides1 test only	99.86%Excellent	1 test99.86%	100%of label	Aug 12, 2025	View →
Everest Peptides1 test only	99.86%Excellent	1 test99.86%	97%of label	Mar 10, 2026	View →
AminoQuest Labs	99.86%Excellent	2 tests99.76–99.95%	116%of label	Feb 27, 2026	View →
Next Generation Compounds1 test only	99.85%Excellent	1 test99.85%	105%of label	Jan 26, 2026	View →
Research Ready Peptides1 test only	99.85%Excellent	1 test99.85%	103%of label	Oct 10, 2024	View →
Instant Peptides	99.85%Excellent	2 tests99.75–99.94%	107%of label	May 20, 2026	View →
onedaycompounds.com	99.84%Excellent	5 tests99.8–99.91%	102%of label	May 27, 2026	View →
snap peptides1 test only	99.84%Excellent	1 test99.84%	115%of label	May 26, 2026	View →
NG Peptide1 test only	99.83%Excellent	1 test99.83%	117%of label	Feb 21, 2026	View →
elyriabio peptides1 test only	99.83%Excellent	1 test99.83%	104%of label	Aug 7, 2026	View →
EvoLabs Research1 test only	99.82%Excellent	1 test99.82%	110%of label	Nov 25, 2025	View →
Amino USA1 test only	99.82%Excellent	1 test99.82%	108%of label	Jan 7, 2026	View →
Peakform Peptides1 test only	99.82%Excellent	1 test99.82%	98%of label	Jan 23, 2026	View →
Power Peptides	99.81%Excellent	2 tests99.69–99.93%	112%of label	Oct 16, 2025	View →
Amino Club1 test only	99.81%Excellent	1 test99.81%	89%of label	Feb 7, 2026	View →
AMP1 test only	99.81%Excellent	1 test99.81%	113%of label	Apr 17, 2026	View →
aminovault.com1 test only	99.81%Excellent	1 test99.81%	102%of label	Jan 7, 2026	View →
FullScale Peptides1 test only	99.81%Excellent	1 test99.81%	99%of label	May 27, 2026	View →
VANDL Labs1 test only	99.8%Excellent	1 test99.8%	103%of label	Mar 16, 2026	View →
NUPEPS Peptides1 test only	99.8%Excellent	1 test99.8%	120%of label	Jan 18, 2026	View →
Vertex Labs1 test only	99.8%Excellent	1 test99.8%	116%of label	May 5, 2026	View →
saiyanmed.com1 test only	99.8%Excellent	1 test99.8%	107%of label	Apr 21, 2026	View →
cernumbiosciences.com1 test only	99.8%Excellent	1 test99.8%	105%of label	Oct 31, 2025	View →
optimumaminos.com peptides1 test only	99.8%Excellent	1 test99.8%	103%of label	Feb 26, 2026	View →
Happy Peptides1 test only	99.79%Excellent	1 test99.79%	102%of label	Feb 19, 2025	View →
Peptide Partners	99.78%Excellent	4 tests99.4–99.96%	102%of label	Apr 4, 2026	View →
RC Peptides1 test only	99.78%Excellent	1 test99.78%	96%of label	Oct 10, 2025	View →
Purity Peptides1 test only	99.78%Excellent	1 test99.78%	102%of label	May 19, 2026	View →
ThreeSide Peptides1 test only	99.78%Excellent	1 test99.78%	95%of label	Jan 16, 2026	View →
Strate Labs1 test only	99.77%Excellent	1 test99.77%	111%of label	Aug 15, 2025	View →
PeptidePlugs1 test only	99.77%Excellent	1 test99.77%	100%of label	Oct 16, 2025	View →
risynthbio.com1 test only	99.77%Excellent	1 test99.77%	109%of label	Feb 11, 2026	View →
phaseonelabz peptides1 test only	99.77%Excellent	1 test99.77%	107%of label	Aug 19, 2026	View →
Humatide1 test only	99.76%Excellent	1 test99.76%	104%of label	Jun 27, 2026	View →
Qing Li Peptide1 test only	99.75%Excellent	1 test99.75%	103%of label	May 15, 2025	View →
Priority Peptides1 test only	99.75%Excellent	1 test99.75%	119%of label	Oct 16, 2024	View →
AS-MS101 test only	99.75%Excellent	1 test99.75%	118%of label	Jul 9, 2026	View →
lapeptides.net	99.75%Excellent	5 tests99.36–99.9%	109%of label	Jun 15, 2026	View →
pureamino.com peptides1 test only	99.75%Excellent	1 test99.75%	105%of label	Jul 13, 2026	View →
apexxbiolabs.com1 test only	99.75%Excellent	1 test99.75%	124%of label	Jul 9, 2026	View →
Kensington Labs1 test only	99.73%Excellent	1 test99.73%	113%of label	Nov 13, 2025	View →
ezpeptides.com1 test only	99.73%Excellent	1 test99.73%	112%of label	Apr 14, 2026	View →
elevatedpeptides.com1 test only	99.73%Excellent	1 test99.73%	—	Feb 25, 2026	View →
Peptidex1 test only	99.72%Excellent	1 test99.72%	106%of label	Dec 31, 2025	View →
researchchemhq.co	99.72%Excellent	5 tests99.46–99.99%	104%of label	Jun 20, 2026	View →
VRIL Peptides1 test only	99.71%Excellent	1 test99.71%	107%of label	Mar 30, 2026	View →
ascensionpeptides.com1 test only	99.71%Excellent	1 test99.71%	94%of label	Feb 24, 2026	View →
plumlabsresearch peptides	99.71%Excellent	3 tests99.31–99.98%	115%of label	Apr 26, 2026	View →
NovaCell Peptides1 test only	99.7%Excellent	1 test99.7%	104%of label	Mar 27, 2026	View →
AS-MS401 test only	99.7%Excellent	1 test99.7%	103%of label	Jul 9, 2026	View →
cosmicpeptides.com	99.7%Excellent	3 tests99.5–99.81%	108%of label	Feb 17, 2026	View →
peptidehubs.com1 test only	99.69%Excellent	1 test99.69%	115%of label	Jan 12, 2026	View →
Penguin Peptides	99.68%Excellent	2 tests99.53–99.84%	104%of label	Jan 20, 2026	View →
Midwest BioResearch1 test only	99.68%Excellent	1 test99.68%	101%of label	May 21, 2026	View →
Riptide Wellness1 test only	99.68%Excellent	1 test99.68%	55%of label	Feb 17, 2026	View →
genpeptide.com	99.68%Excellent	2 tests99.63–99.72%	128%of label	May 1, 2026	View →
PurgoLabs peptides	99.68%Excellent	5 tests99.44–99.92%	111%of label	Jun 21, 2026	View →
Vector Amino Labs LLC1 test only	99.68%Excellent	1 test99.68%	112%of label	Jun 24, 2026	View →
LuvionBio1 test only	99.67%Excellent	1 test99.67%	99%of label	Oct 28, 2025	View →
IRON Peptides1 test only	99.67%Excellent	1 test99.67%	101%of label	Oct 23, 2025	View →
orvellalab peptides1 test only	99.67%Excellent	1 test99.67%	105%of label	Jul 22, 2026	View →
Mile High Compounds	99.66%Excellent	2 tests99.53–99.8%	110%of label	Jan 29, 2026	View →
Synthesis Peptides	99.66%Excellent	5 tests99.36–99.97%	108%of label	May 13, 2026	View →
studzpeptides.com	99.66%Excellent	4 tests99.11–99.97%	108%of label	Jun 28, 2026	View →
ramppeptides.com	99.66%Excellent	4 tests99.46–99.93%	108%of label	Aug 4, 2026	View →
sunrisebioresearch peptides	99.66%Excellent	2 tests99.33–99.98%	106%of label	Jun 23, 2026	View →
Felix Chemical Supply	99.65%Excellent	11 tests99.27–99.94%	110%of label	Feb 27, 2026	View →
Peptide Hackers1 test only	99.65%Excellent	1 test99.65%	112%of label	Jan 29, 2026	View →
Idun peptides	99.65%Excellent	3 tests99.43–99.81%	113%of label	Jul 26, 2026	View →
glowaminos peptides	99.65%Excellent	10 tests99.36–99.88%	105%of label	Jul 30, 2026	View →
Peptide Supply Co	99.64%Excellent	2 tests99.34–99.94%	101%of label	Feb 24, 2026	View →
ezpeps.com	99.63%Excellent	4 tests99.34–99.87%	103%of label	May 12, 2026	View →
optimumformula peptides	99.63%Excellent	4 tests99.26–99.99%	103%of label	Jun 17, 2026	View →
Injectify	99.62%Excellent	2 tests99.43–99.8%	107%of label	Jan 8, 2026	View →
Reta One Labs	99.62%Excellent	3 tests99.06–99.95%	108%of label	May 7, 2026	View →
Nova Peptide Supply	99.61%Excellent	5 tests99.13–99.8%	109%of label	Apr 27, 2026	View →
wolverineresearchlab peptides1 test only	99.61%Excellent	1 test99.61%	114%of label	Jul 25, 2026	View →
Excalibur Peptides1 test only	99.6%Excellent	1 test99.6%	100%of label	Jun 12, 2026	View →
National Science Labs1 test only	99.6%Excellent	1 test99.6%	—	Jan 26, 2026	View →
amc-essentials.com	99.6%Excellent	2 tests99.56–99.64%	105%of label	Jul 12, 2026	View →
doublerlabs.is1 test only	99.6%Excellent	1 test99.6%	115%of label	Jun 20, 2026	View →
pepclubusa.com1 test only	99.6%Excellent	1 test99.6%	103%of label	Jun 21, 2026	View →
nulifepeptides.com1 test only	99.6%Excellent	1 test99.6%	102%of label	Jul 3, 2026	View →
GoAlpha Labs	99.59%Excellent	3 tests99.46–99.69%	114%of label	Apr 12, 2026	View →
Grey Market Peptides1 test only	99.59%Excellent	1 test99.59%	95%of label	Feb 16, 2026	View →
aminotech.shop peptides1 test only	99.59%Excellent	1 test99.59%	95%of label	Feb 16, 2026	View →
aigilresearch peptides1 test only	99.59%Excellent	1 test99.59%	112%of label	Apr 17, 2026	View →
peptinexia	99.59%Excellent	2 tests99.46–99.73%	95%of label	Jul 13, 2026	View →
Polaris Peptides	99.57%Excellent	2 tests99.28–99.87%	112%of label	Dec 22, 2025	View →
Modern Aminos	99.57%Excellent	2 tests99.49–99.65%	121%of label	Mar 10, 2026	View →
Primal Peptides	99.56%Excellent	2 tests99.49–99.63%	112%of label	Jan 6, 2026	View →
Verified Peptides	99.56%Excellent	13 tests99.06–99.97%	106%of label	Apr 17, 2026	View →
peptideminds.com1 test only	99.56%Excellent	1 test99.56%	123%of label	Apr 26, 2026	View →
Skye Peptides	99.55%Excellent	10 tests99–99.82%	112%of label	Jan 29, 2026	View →
Glacier Aminos	99.55%Excellent	9 tests99.09–99.89%	114%of label	Apr 9, 2026	View →
Growth Guys	99.55%Excellent	6 tests99.05–99.85%	110%of label	Jan 16, 2026	View →
Petratide Science	99.55%Excellent	5 tests99.2–99.83%	106%of label	May 7, 2026	View →
BioBoostX1 test only	99.55%Excellent	1 test99.55%	86%of label	Jan 27, 2026	View →
Omega Peptides1 test only	99.55%Excellent	1 test99.55%	105%of label	Feb 9, 2026	View →
honestpeptide.com	99.55%Excellent	2 tests99.5–99.6%	122%of label	Jun 29, 2026	View →
bioedgeresearchlabs.com	99.55%Excellent	2 tests99.44–99.67%	107%of label	Aug 3, 2026	View →
peptideruo.com	99.55%Excellent	3 tests99.12–99.95%	115%of label	Jun 22, 2026	View →
Vera Peptides1 test only	99.54%Excellent	1 test99.54%	114%of label	Apr 7, 2026	View →
offline peptides	99.54%Excellent	2 tests99.17–99.9%	106%of label	Jul 19, 2026	View →
Soma Chems	99.53%Excellent	2 tests99.47–99.59%	103%of label	Feb 16, 2026	View →
Elutide	99.53%Excellent	4 tests99.24–99.79%	104%of label	May 30, 2026	View →
SRYLAB	99.52%Excellent	3 tests99.51–99.53%	137%of label	Sep 1, 2025	View →
puratekpeptides.com	99.52%Excellent	2 tests99.13–99.9%	104%of label	Jun 23, 2026	View →
Instant Peptides	99.51%Excellent	5 tests99.27–99.77%	103%of label	Feb 5, 2026	View →
Simon's Compounding1 test only	99.51%Excellent	1 test99.51%	113%of label	Feb 25, 2025	View →
Luxara Research Company1 test only	99.51%Excellent	1 test99.51%	108%of label	Feb 5, 2026	View →
NEXAPH1 test only	99.5%Excellent	1 test99.5%	122%of label	Dec 10, 2025	View →
silverstonelabsco peptides	99.5%Excellent	3 tests99.43–99.53%	108%of label	Apr 18, 2026	View →
NELA Peptides	99.49%Excellent	2 tests99.13–99.85%	106%of label	Mar 17, 2026	View →
Bluum Peptides	99.49%Excellent	3 tests99.36–99.56%	107%of label	May 17, 2026	View →
Rescue Research USA	99.49%Excellent	2 tests99.42–99.56%	108%of label	Jun 14, 2026	View →
peptidemaxxing.com	99.49%Excellent	2 tests99.07–99.91%	111%of label	Jun 10, 2026	View →
LIMITLESS biotech1 test only	99.48%Excellent	1 test99.48%	105%of label	Nov 4, 2025	View →
Astra Peptides1 test only	99.48%Excellent	1 test99.48%	100%of label	Jan 9, 2026	View →
Wolverine Peptides1 test only	99.48%Excellent	1 test99.48%	415%of label	Mar 3, 2026	View →
24PEPTIDES	99.48%Excellent	5 tests99.1–99.8%	114%of label	Apr 10, 2026	View →
kalyx-labs.com1 test only	99.48%Excellent	1 test99.48%	100%of label	Jun 26, 2026	View →
hightidecompounds peptides	99.48%Excellent	6 tests98.83–99.86%	100%of label	Aug 19, 2026	View →
Zen Aminos	99.47%Excellent	4 tests99.08–99.83%	106%of label	May 14, 2026	View →
utherpeptide.com	99.46%Excellent	2 tests99.45–99.48%	117%of label	Nov 11, 2025	View →
MyPure Peptide	99.45%Excellent	2 tests99.26–99.65%	97%of label	Dec 12, 2025	View →
Pure Health Peptides	99.45%Excellent	15 tests99–99.97%	104%of label	May 6, 2026	View →
Research Peptides Lab	99.45%Excellent	3 tests99.32–99.54%	110%of label	Jan 9, 2026	View →
Peptide Koning	99.45%Excellent	2 tests99.32–99.57%	104%of label	Feb 18, 2026	View →
Rivn Research1 test only	99.45%Excellent	1 test99.45%	109%of label	Jan 8, 2026	View →
Pura Peptide	99.44%Excellent	3 tests99.3–99.64%	137%of label	Jan 28, 2026	View →
HkRoids	99.44%Excellent	4 tests99.25–99.67%	108%of label	Dec 11, 2025	View →
globalaminos.com peptides	99.44%Excellent	2 tests99.27–99.6%	110%of label · 1 of 2	Jul 13, 2026	View →
Peptidology	99.43%Excellent	3 tests99.04–99.89%	98%of label	Feb 4, 2026	View →
Coffee and Peppers	99.43%Excellent	5 tests98.78–99.86%	140%of label	Apr 21, 2026	View →
Stratford Peptides1 test only	99.43%Excellent	1 test99.43%	99%of label	Mar 13, 2026	View →
IonPeptide	99.42%Excellent	12 tests99–99.73%	110%of label	Mar 16, 2026	View →
s1research.net	99.42%Excellent	2 tests99.26–99.58%	117%of label	Jun 12, 2026	View →
trueresearchlabs peptides	99.42%Excellent	2 tests99.26–99.58%	103%of label	May 12, 2026	View →
Licensed Peptides1 test only	99.41%Excellent	1 test99.41%	106%of label	Nov 17, 2025	View →
Empower Peptides	99.4%Excellent	3 tests98.88–99.9%	109%of label	Apr 20, 2026	View →
Royal Peptides	99.4%Excellent	2 tests99.31–99.5%	108%of label	Oct 1, 2025	View →
Neovia Peptides	99.4%Excellent	2 tests99.04–99.77%	111%of label	Dec 31, 2025	View →
Protide Health	99.4%Excellent	5 tests99.14–99.61%	119%of label	Jun 12, 2026	View →
mspeptides.com	99.4%Excellent	6 tests99.12–99.67%	114%of label	Jul 15, 2026	View →
biocollexresearch.com1 test only	99.4%Excellent	1 test99.4%	99%of label	Jan 21, 2026	View →
rivercityaminos peptides1 test only	99.4%Excellent	1 test99.4%	113%of label	Jul 31, 2026	View →
Simple Peptide	99.39%Excellent	9 tests99.06–99.77%	112%of label	Dec 17, 2025	View →
BulkGLP	99.39%Excellent	3 tests99.09–99.68%	104%of label	May 21, 2026	View →
volterasciences.com1 test only	99.39%Excellent	1 test99.39%	107%of label	Jun 5, 2026	View →
modernresearchpeptides.net	99.39%Excellent	4 tests99.17–99.63%	97%of label	Jun 10, 2026	View →
synovasupply.com1 test only	99.39%Excellent	1 test99.39%	99%of label	Jun 19, 2026	View →
signumscientific peptides1 test only	99.39%Excellent	1 test99.39%	99%of label	May 3, 2026	View →
AminoForge	99.38%Excellent	2 tests99.36–99.39%	111%of label	Apr 24, 2026	View →
blueskypeptide.com1 test only	99.38%Excellent	1 test99.38%	—	Jan 16, 2026	View →
Sentinel1 test only	99.38%Excellent	1 test99.38%	97%of label	Aug 25, 2026	View →
Loti Labs1 test only	99.37%Excellent	1 test99.37%	105%of label	Dec 22, 2025	View →
Peak Peptides	99.37%Excellent	3 tests99.35–99.4%	116%of label	Feb 7, 2026	View →
Pure Peptides1 test only	99.37%Excellent	1 test99.37%	98%of label	Dec 15, 2025	View →
Kimera Chems	99.36%Excellent	6 tests99.08–99.69%	107%of label	Jan 20, 2026	View →
realpeptides.co1 test only	99.35%Excellent	1 test99.35%	110%of label	Jun 16, 2026	View →
TNN Peptides1 test only	99.34%Excellent	1 test99.34%	112%of label	Aug 28, 2025	View →
perfectpeptides.com	99.34%Excellent	2 tests99.14–99.55%	96%of label	May 30, 2026	View →
trivialbioworks peptides	99.34%Excellent	3 tests98.87–99.7%	108%of label	Aug 8, 2026	View →
Aminos Research	99.33%Excellent	2 tests99.27–99.38%	107%of label	Dec 15, 2025	View →
Liberty Peptides1 test only	99.32%Excellent	1 test99.32%	106%of label	Jan 27, 2026	View →
Elite Research USA	99.32%Excellent	4 tests99–99.85%	102%of label	Apr 14, 2026	View →
DS Research Peptides1 test only	99.31%Excellent	1 test99.31%	100%of label	Apr 1, 2026	View →
Omegamino1 test only	99.3%Excellent	1 test99.3%	113%of label	Apr 8, 2026	View →
Oath Peptides	99.3%Excellent	7 tests98.32–99.55%	116%of label	Apr 22, 2026	View →
Red Dirt (rdr) peptides	99.3%Excellent	2 tests99.07–99.54%	123%of label	Apr 3, 2026	View →
pepgenicsresearch peptides1 test only	99.3%Excellent	1 test99.3%	98%of label	Jan 21, 2026	View →
RUO	99.29%Excellent	2 tests99.01–99.57%	109%of label	Nov 24, 2025	View →
Blank Peptides	99.29%Excellent	5 tests99.06–99.53%	112%of label	May 27, 2026	View →
Profound Aminos	99.28%Excellent	3 tests99.02–99.42%	102%of label	May 19, 2026	View →
crownwellresearch.com1 test only	99.28%Excellent	1 test99.28%	113%of label	Feb 14, 2026	View →
enhancedpeptides.com1 test only	99.28%Excellent	1 test99.28%	107%of label	Mar 18, 2026	View →
Precisely Peptides1 test only	99.27%Excellent	1 test99.27%	99%of label	Apr 23, 2026	View →
nurapeptide.com	99.27%Excellent	2 tests99.21–99.33%	113%of label	Jun 14, 2026	View →
Tydes	99.26%Excellent	2 tests99.01–99.51%	121%of label	Jan 30, 2026	View →
Alpha Peptides	99.26%Excellent	3 tests99.02–99.7%	102%of label	Apr 25, 2026	View →
Regen Peptides	99.25%Excellent	3 tests99.06–99.44%	123%of label	May 4, 2026	View →
revitalizedresearch.com1 test only	99.25%Excellent	1 test99.25%	102%of label	May 31, 2026	View →
NuScience Peptides1 test only	99.24%Excellent	1 test99.24%	135%of label	Apr 3, 2026	View →
peptidetech.is	99.24%Excellent	2 tests99.02–99.46%	112%of label	Apr 7, 2026	View →
Direct Peptides	99.23%Excellent	2 tests99.2–99.26%	106%of label	Feb 28, 2026	View →
Eternal Peptides1 test only	99.23%Excellent	1 test99.23%	109%of label	Aug 2, 2025	View →
Chameleon Peptides	99.23%Excellent	2 tests99.04–99.42%	102%of label	May 4, 2026	View →
Certified Peptides	99.22%Excellent	3 tests98.84–99.51%	100%of label	Mar 5, 2026	View →
Amino Lair1 test only	99.21%Excellent	1 test99.21%	101%of label	Nov 22, 2025	View →
BetterBio Synthesis1 test only	99.2%Excellent	1 test99.2%	129%of label	Jun 8, 2026	View →
Adria Science1 test only	99.2%Excellent	1 test99.2%	104%of label	May 28, 2026	View →
Cocer Peptides1 test only	99.2%Excellent	1 test99.2%	117%of label	Jun 22, 2026	View →
imaginefirstlabs.com peptides1 test only	99.2%Excellent	1 test99.2%	106%of label	Feb 28, 2026	View →
OROS Research	99.18%Excellent	6 tests98.17–99.5%	103%of label	Feb 28, 2026	View →
NextGen Peptides	99.17%Excellent	3 tests98.63–99.46%	108%of label	Jan 26, 2026	View →
Good Science	99.17%Excellent	3 tests99.11–99.25%	108%of label	May 27, 2026	View →
aminopurecanada.ca1 test only	99.17%Excellent	1 test99.17%	115%of label	Jan 12, 2026	View →
vicorpus.com1 test only	99.15%Excellent	1 test99.15%	117%of label	Mar 10, 2026	View →
Core Peptides1 test only	99.12%Excellent	1 test99.12%	100%of label	Dec 9, 2025	View →
Peptira	99.11%Excellent	8 tests95.52–99.8%	115%of label	Mar 5, 2026	View →
Proxiva Labs	99.11%Excellent	2 tests99.07–99.15%	104%of label	Jun 2, 2026	View →
Honest Peptide1 test only	99.1%Excellent	1 test99.1%	102%of label	Oct 1, 2025	View →
Disguised Alpha1 test only	99.1%Excellent	1 test99.1%	101%of label	May 17, 2026	View →
Peppy&Me1 test only	99.1%Excellent	1 test99.1%	105%of label	Apr 9, 2026	View →
Peptide Pro Canada	99.1%Excellent	2 tests99.07–99.13%	116%of label	Jun 5, 2026	View →
Vylix Research1 test only	99.09%Excellent	1 test99.09%	115%of label	Mar 26, 2026	View →
Simple Peptides1 test only	99.08%Excellent	1 test99.08%	100%of label	Jun 15, 2025	View →
corepeptides.com1 test only	99.06%Excellent	1 test99.06%	100%of label	Apr 2, 2026	View →
Prime Peptides1 test only	99.05%Excellent	1 test99.05%	107%of label	Mar 25, 2026	View →
Glowing Peptides1 test only	99.05%Excellent	1 test99.05%	113%of label	Feb 26, 2026	View →
Valor Peptides	99.04%Excellent	3 tests98.77–99.43%	115%of label	Apr 29, 2026	View →
Beyond Peptides1 test only	99.04%Excellent	1 test99.04%	105%of label	Dec 5, 2025	View →
Nextgen Peptides1 test only	99.04%Excellent	1 test99.04%	103%of label	May 23, 2026	View →
Panda Peptides1 test only	99.04%Excellent	1 test99.04%	113%of label	May 4, 2026	View →
imperialpeptides.co.uk1 test only	99.04%Excellent	1 test99.04%	110%of label	Feb 10, 2026	View →
biotechcompounds.com peptides1 test only	99.02%Excellent	1 test99.02%	105%of label	Feb 13, 2026	View →
Atomik Labz	99.01%Excellent	5 tests98.15–99.79%	111%of label	Feb 11, 2026	View →
umbrellalabs.is1 test only	99.01%Excellent	1 test99.01%	97%of label	Apr 10, 2026	View →
pureuspeptide.com/1 test only	99.01%Excellent	1 test99.01%	110%of label	Mar 23, 2026	View →
uspurepeptides.com1 test only	99.01%Excellent	1 test99.01%	110%of label	Mar 23, 2026	View →
Proforma Peptides	99%Excellent	8 tests99–99%	102%of label	May 19, 2026	View →
Research Peptides Europe1 test only	99%Excellent	1 test99%	104%of label	Dec 29, 2025	View →
modifiedaminos.shop peptides	99%Excellent	2 tests99–99%	103%of label	Jul 6, 2026	View →
Forge Biolab	98.94%Research grade	6 tests98.16–99.84%	102%of label · 3 of 6	May 30, 2026	View →
NOVA Labs1 test only	98.93%Research grade	1 test98.93%	103%of label	May 19, 2026	View →
Regenorix1 test only	98.9%Research grade	1 test98.9%	109%of label	Feb 23, 2026	View →
Corix Research Labs UK Limited1 test only	98.83%Research grade	1 test98.83%	108%of label	Jun 25, 2026	View →
Rhome Research1 test only	98.82%Research grade	1 test98.82%	97%of label	Apr 1, 2026	View →
Particle Peptides	98.7%Research grade	2 tests97.6–99.8%	101%of label	Oct 16, 2025	View →
Peptide Pro Shop1 test only	98.52%Research grade	1 test98.52%	77%of label	Dec 8, 2025	View →
Evolve BioPep	98%Research grade	2 tests98–98%	107%of label	Mar 30, 2026	View →
KÖLD1 test only	97.96%Marginal	1 test97.96%	110%of label	Apr 27, 2026	View →
PEPTIDE Power1 test only	97.85%Marginal	1 test97.85%	111%of label	Nov 4, 2025	View →
Biolabshop1 test only	97%Marginal	1 test97%	104%of label	Jun 25, 2024	View →
XL Peptides1 test only	96.82%Marginal	1 test96.82%	101%of label	Nov 18, 2025	View →
Limitless Life Nootropics1 test only	95.49%Marginal	1 test95.49%	103%of label	Nov 4, 2025	View →

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.

See all lab tests for MOTS-C Shops selling MOTS-C

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 Range	Classification	Typical Use Case
≥ 99%	Excellent	Quantitative research, sensitive assays
98–98.9%	Research grade	General research applications
95–97.9%	Marginal	Screening, preliminary research only
< 95%	Below standard	Not 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

Peptide Reconstitution Calculator — syringe units and doses per vial
Cost-per-Dose Calculator — cost per dose, per day, per month
BAC Water Calculator — how much BAC water you need

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