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.

Select a peptide

Sort by

240Brands compared

540Tests on file

99.99%Top avg purity

All Tesamorelin lab tests →

Brand / shop	Avg HPLC purity	Spread	Net content	Last tested
vicorpus.com1 test only	99.99%Excellent	1 test99.99%	111%of label	Mar 10, 2026	View →
pepgenicsresearch peptides	99.94%Excellent	2 tests99.92–99.96%	115%of label	Apr 16, 2026	View →
Amino Amigos1 test only	99.93%Excellent	1 test99.93%	103%of label	Feb 5, 2024	View →
Forge Biolab	99.92%Excellent	2 tests99.92–99.92%	—	May 12, 2026	View →
ramppeptides.com	99.92%Excellent	2 tests99.89–99.95%	108%of label	Aug 13, 2026	View →
Rivn Research1 test only	99.91%Excellent	1 test99.91%	122%of label	Feb 18, 2026	View →
peptime.com1 test only	99.91%Excellent	1 test99.91%	114%of label	Jul 21, 2026	View →
NuScience Peptides1 test only	99.9%Excellent	1 test99.9%	122%of label	Nov 1, 2025	View →
NUPEPS Peptides1 test only	99.9%Excellent	1 test99.9%	139%of label	Jan 18, 2026	View →
Gentleman Peptides1 test only	99.9%Excellent	1 test99.9%	104%of label	May 2, 2026	View →
Peppy&Me1 test only	99.9%Excellent	1 test99.9%	109%of label	Apr 9, 2026	View →
peptideminds.com1 test only	99.9%Excellent	1 test99.9%	112%of label	Apr 26, 2026	View →
myoasislabs peptides1 test only	99.9%Excellent	1 test99.9%	105%of label	Jun 15, 2026	View →
NuRev Peptides1 test only	99.89%Excellent	1 test99.89%	96%of label	Aug 12, 2025	View →
volterasciences.com1 test only	99.89%Excellent	1 test99.89%	105%of label	Jun 11, 2026	View →
aminovault.com1 test only	99.89%Excellent	1 test99.89%	103%of label	Jun 24, 2026	View →
Bulk Peptide Supply	99.88%Excellent	5 tests99.8–99.9%	99%of label	Sep 24, 2025	View →
Luxara Research Company1 test only	99.88%Excellent	1 test99.88%	219%of label	Feb 19, 2026	View →
Vector Amino Labs LLC1 test only	99.88%Excellent	1 test99.88%	112%of label	Jun 24, 2026	View →
Real Peptides1 test only	99.87%Excellent	1 test99.87%	116%of label	Nov 1, 2025	View →
americanpeptides.us	99.87%Excellent	3 tests99.8–99.9%	109%of label	Jun 17, 2026	View →
Sentinel (US)1 test only	99.87%Excellent	1 test99.87%	108%of label	Jul 18, 2026	View →
NEXAPH1 test only	99.86%Excellent	1 test99.86%	112%of label	Apr 1, 2026	View →
BetterBio Synthesis1 test only	99.85%Excellent	1 test99.85%	101%of label	Apr 30, 2025	View →
honestpeptide.com1 test only	99.85%Excellent	1 test99.85%	120%of label	Jun 15, 2026	View →
AMP1 test only	99.84%Excellent	1 test99.84%	112%of label	Apr 1, 2026	View →
ezpeptides.com1 test only	99.84%Excellent	1 test99.84%	112%of label	Apr 1, 2026	View →
biotechcompounds.com peptides1 test only	99.84%Excellent	1 test99.84%	105%of label	Aug 4, 2026	View →
Peptide Plugs	99.84%Excellent	2 tests99.81–99.86%	106%of label	Jul 16, 2026	View →
Humatide	99.83%Excellent	2 tests99.83–99.83%	105%of label	Jun 29, 2026	View →
Pura Peptide	99.82%Excellent	3 tests99.78–99.84%	115%of label	Oct 16, 2025	View →
Verified Peptides	99.82%Excellent	2 tests99.76–99.88%	102%of label	Feb 26, 2026	View →
ThreeSide Peptides1 test only	99.82%Excellent	1 test99.82%	111%of label	Jan 15, 2026	View →
ascensionpeptides.com	99.82%Excellent	2 tests99.7–99.93%	114%of label	Jun 2, 2026	View →
snap peptides1 test only	99.82%Excellent	1 test99.82%	108%of label	May 26, 2026	View →
saiyanmed.com1 test only	99.81%Excellent	1 test99.81%	109%of label	Feb 5, 2026	View →
phaseonelabz peptides1 test only	99.81%Excellent	1 test99.81%	105%of label	Jul 20, 2026	View →
peptide.partners	99.81%Excellent	2 tests99.8–99.81%	103%of label	Jun 19, 2026	View →
Fitt Formulas1 test only	99.8%Excellent	1 test99.8%	98%of label	Feb 18, 2026	View →
Instant Peptides	99.8%Excellent	2 tests99.71–99.88%	110%of label	May 20, 2026	View →
Precisely Peptides1 test only	99.8%Excellent	1 test99.8%	105%of label	Apr 23, 2026	View →
TNN Peptides1 test only	99.8%Excellent	1 test99.8%	119%of label	Aug 28, 2025	View →
NovaCell Peptides1 test only	99.8%Excellent	1 test99.8%	95%of label	Apr 20, 2026	View →
adriascience.com1 test only	99.8%Excellent	1 test99.8%	94%of label	Jun 22, 2026	View →
onedaycompounds.com	99.8%Excellent	3 tests99.8–99.8%	106%of label	May 1, 2026	View →
curo.you1 test only	99.8%Excellent	1 test99.8%	123%of label	Jul 10, 2026	View →
pureuspeptide.com/1 test only	99.8%Excellent	1 test99.8%	100%of label	Feb 24, 2026	View →
uspurepeptides.com1 test only	99.8%Excellent	1 test99.8%	100%of label	Feb 24, 2026	View →
corepeptides.com	99.79%Excellent	2 tests99.78–99.8%	100%of label	Apr 28, 2026	View →
Regen Peptides1 test only	99.78%Excellent	1 test99.78%	114%of label	Apr 14, 2026	View →
kalyx-labs.com1 test only	99.78%Excellent	1 test99.78%	119%of label	May 11, 2026	View →
puratekpeptides.com	99.78%Excellent	2 tests99.76–99.8%	103%of label	Jun 11, 2026	View →
nulifepeptides.com1 test only	99.78%Excellent	1 test99.78%	117%of label	Jul 3, 2026	View →
peptideruo.com	99.78%Excellent	2 tests99.73–99.83%	167%of label	Jun 10, 2026	View →
blueskypeptide.com1 test only	99.77%Excellent	1 test99.77%	—	Jan 23, 2026	View →
biocollexresearch.com1 test only	99.77%Excellent	1 test99.77%	132%of label	Mar 2, 2026	View →
Purity Peptides1 test only	99.76%Excellent	1 test99.76%	102%of label	May 19, 2026	View →
aigilresearch peptides1 test only	99.76%Excellent	1 test99.76%	104%of label	Jul 26, 2026	View →
Peptide Pro Shop	99.75%Excellent	2 tests99.7–99.8%	103%of label	Feb 28, 2026	View →
Simon's Compounding1 test only	99.75%Excellent	1 test99.75%	98%of label	Mar 20, 2026	View →
studzpeptides.com	99.75%Excellent	4 tests99.42–99.96%	108%of label	Jun 29, 2026	View →
pepclubusa.com1 test only	99.75%Excellent	1 test99.75%	116%of label	Jun 21, 2026	View →
enhancedpeptides.com1 test only	99.75%Excellent	1 test99.75%	113%of label	Mar 10, 2026	View →
bioedgeresearchlabs.com	99.75%Excellent	4 tests99.7–99.79%	107%of label	Aug 3, 2026	View →
peptide-lab.eu1 test only	99.74%Excellent	1 test99.74%	103%of label	Apr 14, 2026	View →
apspeptide.com1 test only	99.74%Excellent	1 test99.74%	117%of label	Apr 8, 2026	View →
Power Peptides1 test only	99.73%Excellent	1 test99.73%	104%of label	Oct 16, 2025	View →
orvellalab peptides1 test only	99.73%Excellent	1 test99.73%	102%of label	Jun 3, 2026	View →
PeptidePlugs1 test only	99.72%Excellent	1 test99.72%	100%of label	Oct 16, 2025	View →
wolverineresearchlab peptides1 test only	99.72%Excellent	1 test99.72%	122%of label	Jul 2, 2026	View →
Evolabs Research1 test only	99.71%Excellent	1 test99.71%	108%of label	May 29, 2026	View →
Nextgen Peptides	99.7%Excellent	4 tests99.4–99.98%	104%of label	May 12, 2026	View →
cosmicpeptides.com	99.7%Excellent	2 tests99.7–99.7%	106%of label	Feb 26, 2026	View →
AN11 test only	99.7%Excellent	1 test99.7%	91%of label	Mar 29, 2026	View →
Regenerative Research peptides	99.7%Excellent	2 tests99.7–99.7%	123%of label	Jul 23, 2026	View →
Astra Peptides1 test only	99.69%Excellent	1 test99.69%	103%of label	Feb 2, 2026	View →
BioLongevity Labs	99.69%Excellent	10 tests98.9–99.92%	110%of label	Apr 27, 2026	View →
Trulab Peptides	99.69%Excellent	2 tests99.45–99.92%	106%of label	Apr 28, 2026	View →
Elite Research USA	99.68%Excellent	2 tests99.62–99.74%	107%of label	Apr 2, 2026	View →
optimumformula peptides	99.68%Excellent	2 tests99.41–99.95%	114%of label	Jun 17, 2026	View →
BleauGenics1 test only	99.67%Excellent	1 test99.67%	117%of label	Aug 4, 2025	View →
NextGen Peptides	99.66%Excellent	3 tests99.49–99.78%	118%of label	Feb 18, 2026	View →
perfectpeptides.com	99.65%Excellent	3 tests99.57–99.76%	101%of label	May 31, 2026	View →
Reta One Labs	99.64%Excellent	5 tests99.12–99.94%	107%of label	May 7, 2026	View →
Peptide Koning1 test only	99.64%Excellent	1 test99.64%	110%of label	Mar 3, 2026	View →
24PEPTIDES	99.64%Excellent	5 tests99–99.8%	106%of label	Jun 22, 2026	View →
Loti Labs1 test only	99.63%Excellent	1 test99.63%	137%of label	Feb 5, 2026	View →
Peptide Pro1 test only	99.63%Excellent	1 test99.63%	228%of label	Sep 15, 2025	View →
RC Peptides1 test only	99.63%Excellent	1 test99.63%	138%of label	Oct 10, 2025	View →
Prosperity Peptides1 test only	99.63%Excellent	1 test99.63%	142%of label	Feb 21, 2026	View →
Rescue Research USA	99.63%Excellent	2 tests99.54–99.72%	108%of label	Jun 14, 2026	View →
AS-TS51 test only	99.63%Excellent	1 test99.63%	112%of label	Jul 9, 2026	View →
glowaminos peptides	99.63%Excellent	9 tests99.3–99.84%	115%of label	Jul 25, 2026	View →
Atomik Labz	99.61%Excellent	5 tests99–99.98%	108%of label	Mar 5, 2026	View →
Synthesis Peptides	99.61%Excellent	2 tests99.36–99.87%	103%of label	May 20, 2026	View →
elevatedpeptides.com1 test only	99.61%Excellent	1 test99.61%	134%of label	Jun 24, 2026	View →
Peptide Crafters	99.6%Excellent	6 tests99.16–99.89%	109%of label	Feb 16, 2026	View →
Amino Lair1 test only	99.6%Excellent	1 test99.6%	103%of label	Aug 6, 2025	View →
Glacier Aminos	99.6%Excellent	11 tests98.64–99.94%	110%of label	May 15, 2026	View →
Excalibur Peptides1 test only	99.6%Excellent	1 test99.6%	119%of label	May 18, 2026	View →
Protide Health	99.6%Excellent	5 tests99.3–99.84%	120%of label	May 18, 2026	View →
Certified Peptides1 test only	99.59%Excellent	1 test99.59%	102%of label	Dec 18, 2025	View →
Peptide Hackers1 test only	99.59%Excellent	1 test99.59%	110%of label	Sep 16, 2025	View →
optimumaminos.com peptides1 test only	99.59%Excellent	1 test99.59%	133%of label	Feb 26, 2026	View →
Priority Peptides1 test only	99.58%Excellent	1 test99.58%	120%of label	Oct 16, 2024	View →
nurapeptide.com	99.58%Excellent	3 tests99.02–99.93%	113%of label	Jun 14, 2026	View →
Aminos Research1 test only	99.57%Excellent	1 test99.57%	110%of label	Sep 26, 2025	View →
Kimera Chems	99.57%Excellent	4 tests99.09–99.98%	112%of label	Feb 5, 2026	View →
OROS Research	99.56%Excellent	4 tests99.1–99.88%	115%of label	Feb 9, 2026	View →
Riptide Wellness	99.56%Excellent	3 tests99.11–99.83%	113%of label	Apr 22, 2026	View →
imperialpeptides.co.uk1 test only	99.56%Excellent	1 test99.56%	161%of label	Jan 19, 2026	View →
globalaminos.com peptides	99.55%Excellent	2 tests99.37–99.73%	124%of label · 1 of 2	Jul 13, 2026	View →
lapeptides.net	99.55%Excellent	5 tests99.11–99.9%	109%of label	Jun 15, 2026	View →
Peptide Partners	99.54%Excellent	4 tests99.1–99.85%	106%of label	Apr 21, 2026	View →
Disguised Alpha	99.54%Excellent	2 tests99.45–99.63%	106%of label	Apr 22, 2026	View →
AS-TS101 test only	99.54%Excellent	1 test99.54%	114%of label	Jul 9, 2026	View →
Skye Peptides	99.52%Excellent	12 tests99.04–99.93%	117%of label	Mar 27, 2026	View →
cernumbiosciences.com1 test only	99.51%Excellent	1 test99.51%	97%of label	Oct 31, 2025	View →
Midwest BioResearch1 test only	99.5%Excellent	1 test99.5%	99%of label	May 21, 2026	View →
Peptide Pro Canada1 test only	99.5%Excellent	1 test99.5%	116%of label	May 11, 2026	View →
blankpeptides.com	99.5%Excellent	2 tests99.37–99.62%	109%of label	Jun 16, 2026	View →
Penguin Peptides	99.49%Excellent	3 tests99.13–99.86%	104%of label	Jan 21, 2026	View →
Mile High Compounds	99.49%Excellent	5 tests98.68–99.93%	94%of label	Mar 22, 2026	View →
Peptide Supply Co	99.49%Excellent	2 tests99.45–99.53%	107%of label	Mar 10, 2026	View →
NeuroLabs Research1 test only	99.49%Excellent	1 test99.49%	102%of label	Feb 9, 2026	View →
silverstonelabsco peptides	99.49%Excellent	4 tests99.33–99.61%	105%of label	Jun 24, 2026	View →
RUO	99.48%Excellent	2 tests99.15–99.8%	96%of label	May 6, 2026	View →
SRYLAB	99.47%Excellent	5 tests99.2–99.67%	115%of label	Aug 11, 2025	View →
Zen Aminos	99.47%Excellent	5 tests99.1–99.89%	106%of label	May 14, 2026	View →
alyvepeptides.com1 test only	99.46%Excellent	1 test99.46%	91%of label	May 29, 2026	View →
peptidemaxxing.com1 test only	99.46%Excellent	1 test99.46%	91%of label	May 29, 2026	View →
Coastal Peptides1 test only	99.45%Excellent	1 test99.45%	105%of label	Oct 1, 2025	View →
Peak Peptides	99.45%Excellent	3 tests99.4–99.56%	119%of label	Apr 9, 2026	View →
Tydes	99.44%Excellent	3 tests99.15–99.83%	116%of label	Mar 20, 2026	View →
Paramount Peptides1 test only	99.43%Excellent	1 test99.43%	137%of label	Oct 31, 2025	View →
Evolve BioPep	99.42%Excellent	2 tests99.04–99.8%	104%of label	Feb 25, 2026	View →
Growth Guys	99.42%Excellent	7 tests99.1–99.89%	112%of label	Feb 19, 2026	View →
Oupeptide1 test only	99.42%Excellent	1 test99.42%	106%of label	Apr 28, 2025	View →
Oath Peptides	99.41%Excellent	2 tests99.21–99.61%	143%of label	May 7, 2026	View →
signumscientific peptides1 test only	99.41%Excellent	1 test99.41%	101%of label	Feb 18, 2026	View →
Peptidology	99.4%Excellent	4 tests99.22–99.5%	103%of label	Mar 31, 2026	View →
Bluum Peptides	99.4%Excellent	6 tests99.06–99.76%	102%of label	Jun 12, 2026	View →
modernresearchpeptides.net	99.4%Excellent	5 tests99.06–99.78%	107%of label	May 30, 2026	View →
biopeptitech.com	99.4%Excellent	3 tests99.1–99.59%	105%of label	Mar 18, 2026	View →
marvel-peptide.com1 test only	99.4%Excellent	1 test99.4%	135%of label	Feb 20, 2026	View →
Amino USA	99.39%Excellent	8 tests98.1–99.9%	102%of label	Jan 7, 2026	View →
AminoForge1 test only	99.39%Excellent	1 test99.39%	102%of label	Mar 22, 2026	View →
ezpeps.com	99.39%Excellent	6 tests98.6–99.63%	115%of label	Jun 23, 2026	View →
revitalizedresearch.com1 test only	99.39%Excellent	1 test99.39%	102%of label	Jun 27, 2026	View →
hightidecompounds peptides	99.39%Excellent	4 tests99.02–99.78%	109%of label	Aug 12, 2026	View →
Direct Peptides	99.38%Excellent	2 tests99.34–99.41%	100%of label	Feb 28, 2026	View →
Nova Peptide Supply	99.38%Excellent	8 tests99.1–99.85%	109%of label	Apr 15, 2026	View →
Petratide Science	99.38%Excellent	4 tests98.98–99.93%	109%of label	May 7, 2026	View →
Qing Li Peptide1 test only	99.37%Excellent	1 test99.37%	99%of label	Apr 16, 2025	View →
utherpeptide.com	99.37%Excellent	3 tests99.27–99.53%	112%of label	Dec 2, 2025	View →
synovasupply.com1 test only	99.37%Excellent	1 test99.37%	100%of label	Jun 19, 2026	View →
Idun peptides	99.37%Excellent	2 tests99.29–99.44%	120%of label	Jul 26, 2026	View →
Arcane Peptides	99.36%Excellent	2 tests99.15–99.57%	102%of label	Feb 13, 2026	View →
BioBoostX	99.36%Excellent	2 tests99.36–99.36%	107%of label	Feb 4, 2026	View →
HkRoids	99.34%Excellent	5 tests99.23–99.48%	105%of label	Dec 11, 2025	View →
Grey Market Peptides	99.34%Excellent	2 tests99.29–99.38%	135%of label	Feb 16, 2026	View →
aminotech.shop peptides	99.34%Excellent	2 tests99.29–99.38%	135%of label	Feb 16, 2026	View →
Licensed Peptides	99.33%Excellent	3 tests99.04–99.79%	87%of label	Dec 17, 2025	View →
Pure Health Peptides	99.33%Excellent	9 tests99–99.95%	111%of label	Apr 12, 2026	View →
restore peptides1 test only	99.33%Excellent	1 test99.33%	99%of label	Feb 9, 2026	View →
Polaris Peptides	99.32%Excellent	2 tests99.1–99.54%	117%of label	Dec 16, 2025	View →
NELA Peptides1 test only	99.32%Excellent	1 test99.32%	97%of label	Jan 8, 2026	View →
Royal Peptides	99.32%Excellent	3 tests99.07–99.56%	111%of label	Jul 1, 2025	View →
Chameleon Peptides	99.32%Excellent	2 tests99.2–99.44%	105%of label	May 4, 2026	View →
Blank Peptides	99.31%Excellent	5 tests99.08–99.6%	109%of label	Apr 7, 2026	View →
NOVA Labs1 test only	99.3%Excellent	1 test99.3%	108%of label	Apr 10, 2026	View →
Vertex Labs	99.3%Excellent	2 tests99.2–99.4%	89%of label	May 14, 2026	View →
researchchemhq.co	99.3%Excellent	6 tests98.5–99.95%	106%of label	Jun 20, 2026	View →
Instant Peptides	99.29%Excellent	5 tests99.08–99.48%	112%of label	Feb 6, 2026	View →
trueresearchlabs peptides	99.29%Excellent	2 tests99.23–99.34%	100%of label	Apr 17, 2026	View →
XL Peptides1 test only	99.28%Excellent	1 test99.28%	105%of label	Jan 29, 2025	View →
FullScale Peptides1 test only	99.28%Excellent	1 test99.28%	128%of label	Feb 17, 2026	View →
offline peptides1 test only	99.28%Excellent	1 test99.28%	119%of label	Jul 19, 2026	View →
Soma Chems	99.26%Excellent	4 tests99.15–99.38%	119%of label	Feb 16, 2026	View →
Coffee and Peppers	99.26%Excellent	3 tests99.03–99.51%	111%of label	Apr 21, 2026	View →
Hydro Research Peptides1 test only	99.24%Excellent	1 test99.24%	104%of label	Dec 8, 2025	View →
Optima Supply1 test only	99.24%Excellent	1 test99.24%	104%of label	Dec 8, 2025	View →
Prime Peptides1 test only	99.24%Excellent	1 test99.24%	105%of label	Dec 11, 2025	View →
Sigma Audley (SSA)1 test only	99.22%Excellent	1 test99.22%	105%of label	Jul 17, 2025	View →
Peptira	99.21%Excellent	8 tests98.65–99.7%	110%of label	Apr 2, 2026	View →
genpeptide.com	99.21%Excellent	2 tests99.04–99.39%	112%of label	Apr 30, 2026	View →
Modern Aminos	99.2%Excellent	2 tests99.1–99.29%	111%of label	Jan 23, 2026	View →
Panda Peptides1 test only	99.2%Excellent	1 test99.2%	107%of label	May 4, 2026	View →
amc-essentials.com	99.2%Excellent	2 tests99.09–99.32%	111%of label	Jun 15, 2026	View →
imaginefirstlabs.com peptides1 test only	99.19%Excellent	1 test99.19%	101%of label	May 28, 2026	View →
Strate Labs1 test only	99.16%Excellent	1 test99.16%	100%of label	Aug 15, 2025	View →
Everest Peptides1 test only	99.16%Excellent	1 test99.16%	110%of label	Mar 19, 2026	View →
peptidetech.is1 test only	99.16%Excellent	1 test99.16%	104%of label	Apr 7, 2026	View →
mspeptides.com	99.14%Excellent	2 tests99.1–99.18%	115%of label	Feb 8, 2026	View →
Research Peptides Lab	99.13%Excellent	2 tests99.1–99.16%	100%of label	Jan 1, 2025	View →
Liberty Peptides1 test only	99.12%Excellent	1 test99.12%	104%of label	Jan 27, 2026	View →
LuvionBio1 test only	99.12%Excellent	1 test99.12%	106%of label	Jan 19, 2026	View →
EvoLabs Research1 test only	99.12%Excellent	1 test99.12%	100%of label	Aug 1, 2025	View →
Lab Trust Peptides1 test only	99.12%Excellent	1 test99.12%	102%of label	Jun 10, 2024	View →
sunrisebioresearch peptides1 test only	99.11%Excellent	1 test99.11%	105%of label	Jan 21, 2026	View →
Core Peptides	99.1%Excellent	3 tests99–99.27%	81%of label	Dec 9, 2025	View →
Next Generation Compounds1 test only	99.1%Excellent	1 test99.1%	98%of label	Jan 26, 2026	View →
polarispeptides.com	99.1%Excellent	2 tests99.04–99.15%	98%of label	Jun 29, 2026	View →
Peptify UK1 test only	99.09%Excellent	1 test99.09%	108%of label	May 11, 2026	View →
Omegamino1 test only	99.08%Excellent	1 test99.08%	125%of label	Apr 8, 2026	View →
Felix Chemical Supply	99.08%Excellent	15 tests98.05–99.86%	111%of label	Apr 26, 2026	View →
Good Science	99.08%Excellent	5 tests99–99.2%	104%of label	May 27, 2026	View →
DS Research Peptides1 test only	99.08%Excellent	1 test99.08%	127%of label	Mar 31, 2026	View →
ignitepeptides.com1 test only	99.08%Excellent	1 test99.08%	106%of label	Feb 22, 2026	View →
trivialbioworks peptides	99.08%Excellent	2 tests98.93–99.23%	109%of label	May 21, 2026	View →
HPR1 test only	99.07%Excellent	1 test99.07%	99%of label	Oct 20, 2025	View →
VANDL Labs1 test only	99.07%Excellent	1 test99.07%	107%of label	Jan 1, 2025	View →
IonPeptide	99.06%Excellent	9 tests98.01–99.79%	115%of label	Mar 16, 2026	View →
plumlabsresearch peptides1 test only	99.06%Excellent	1 test99.06%	133%of label	Mar 28, 2026	View →
VRIL Peptides1 test only	99.05%Excellent	1 test99.05%	102%of label	Mar 30, 2026	View →
Empower Peptides	99.04%Excellent	6 tests98.21–99.8%	107%of label	Apr 20, 2026	View →
Vylix Research1 test only	99.04%Excellent	1 test99.04%	124%of label	Mar 26, 2026	View →
Glowing Peptides1 test only	99.04%Excellent	1 test99.04%	104%of label	May 6, 2026	View →
Valor Peptides	99.03%Excellent	6 tests98.34–99.58%	112%of label	May 16, 2026	View →
nextedge peptides1 test only	99.03%Excellent	1 test99.03%	86%of label	Apr 15, 2026	View →
Eternal Peptides1 test only	99.02%Excellent	1 test99.02%	101%of label	Oct 21, 2025	View →
Neovia Peptides1 test only	99.02%Excellent	1 test99.02%	101%of label	Sep 18, 2025	View →
Kensington Labs1 test only	99.01%Excellent	1 test99.01%	102%of label	Oct 7, 2025	View →
Elutide	99.01%Excellent	4 tests98.5–99.23%	103%of label	Jun 6, 2026	View →
AminoQuest Labs1 test only	99.01%Excellent	1 test99.01%	128%of label	Feb 27, 2026	View →
Proforma Peptides	99%Excellent	2 tests99–99%	102%of label	Dec 2, 2025	View →
Simply Peptides1 test only	99%Excellent	1 test99%	108%of label	Mar 30, 2026	View →
Stratford Peptides1 test only	99%Excellent	1 test99%	103%of label	Apr 24, 2026	View →
modifiedaminos.shop peptides	99%Excellent	2 tests99–99%	102%of label	Jul 6, 2026	View →
PurgoLabs peptides1 test only	98.98%Research grade	1 test98.98%	99%of label	Feb 9, 2026	View →
IRON Peptides1 test only	98.94%Research grade	1 test98.94%	108%of label	Dec 1, 2025	View →
Research Peptides Europe1 test only	98.8%Research grade	1 test98.8%	103%of label	Dec 29, 2025	View →
Alpha Peptides	98.79%Research grade	2 tests98.56–99.03%	110%of label	Oct 21, 2025	View →
GoAlpha Labs	98.75%Research grade	3 tests97.29–99.51%	115%of label	Mar 11, 2026	View →
Peakform Peptides1 test only	98.7%Research grade	1 test98.7%	108%of label	Jan 23, 2026	View →
Alpha Carbon Labs1 test only	98.66%Research grade	1 test98.66%	101%of label	Dec 2, 2025	View →
KÖLD1 test only	98.23%Research grade	1 test98.23%	107%of label	Jan 4, 2026	View →
Proxiva Labs1 test only	98.2%Research grade	1 test98.2%	98%of label	Jun 2, 2026	View →
Vantyx Research1 test only	97.2%Marginal	1 test97.2%	99%of label	Mar 9, 2026	View →
Profound Aminos	95.71%Marginal	3 tests88.28–99.74%	112%of label	Mar 31, 2026	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 Tesamorelin Shops selling Tesamorelin

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

Related Peptides

5-Amino-1MQ ACE-031 Adamax (Davunetide/NAP)Adipotide AHK-Cu Aicar AOD-9604 ARA-290 Argireline BPC-157 Cagrilintide Cardiogen