PeptideScanner

Top 10 peptide suppliers in the US

Compare US peptide suppliers by price, testing information and shipping options.

What do you actually get for your money? We compare vial sizes, bulk offers, lab reports and shipping costs, and say why each US supplier ranks where it does.

All ten ship to US addresses. We left out one store that says it has closed.

Each supplier gets a rank score out of 100: 70% from trust (our PSV Trust Score) and 30% from price. Price uses the US price index. The median price for matched vials earns 50 price points, plus one per 1% below it or minus one per 1% above. Price index method.

We read their shipping and payment terms on 30 September 2026. USD prices are from the past 30 days, before shipping.

Rank scores for the ten US suppliers

RankSupplierTrust scorePrice indexRank scorePrice grade
1Zenith Bioscience34.7/6060.197.0Much lower
2Panda Peptides31.9/6073.887.2Much lower
3Ramp Peptides31/6069.986.6Much lower
4Elite Edge Biotech30.7/6070.185.9Much lower
5Step One Ventures28.2/6058.784.3Much lower
6Licensed Peptides30.6/6076.183.9Much lower
7Silverstone Labs Co28.1/6059.283.9Much lower
8Purus Peptides31.8/6085.483.5Lower
9ezPeps31.8/6087.982.8Lower
10Peptidology33.4/60Unrated82.4Unrated

An index of 90 is about 10% below the median. 151 of 228 US suppliers have an index.

Supplier notes, from 1 to 10

1. Zenith Bioscience

Rank score 97.0Trust 34.7/60Price index 60.1 (much lower)

Zenith Bioscience ships from Aurora, Colorado, to US states, D.C., Puerto Rico and the US Virgin Islands only. Weekday orders before 3:00 PM Mountain Time ship the same day, and shipping is free over $200. It takes PayPal, ACH, cards, Zelle, USDC and Bitcoin (5% off).

Website: zenithbioscience.com →

Why Zenith Bioscience ranks here

Its certificates are recent: 29 dated reports from Kovera Labs for 22 peptides, about 45 days old on average, with 17 peptides retested. All 89 purity results met 98%. About 149 external reviews average 4.9, but most Reddit posts are affiliate codes.

Keep in mind. All reports come from one lab and do not show the vial amount, so we could not check fill.

Zenith Bioscience sources (): Supplier website · Shipping policy · FAQ.

2. Panda Peptides

Rank score 87.2Trust 31.9/60Price index 73.8 (much lower)Lab certificates for 12 of 16 products

Panda Peptides ships only within the US by USPS Priority Mail, 1-2 business days after payment. Orders over $50 ship free. Its FAQ lists Cash App, Zelle, bank transfer and card, and it sells single vials, not kits.

Website: pandapeptides.com →

Why Panda Peptides ranks here

Its certificates are the newest here: 29 dated reports from Janoshik and ILS Labs for 24 peptides, about 34 days old on average. All 62 purity results met 98%, and only 3 of 46 vials were under the label. About 76 external reviews average 4.8, all posted within about 3 months.

Keep in mind. It is a young store, and only 2 peptides were retested. Match your vial’s batch code to its report.

Panda Peptides sources (): Supplier website · Shipping policy · FAQ · Lab reports.

3. Ramp Peptides

Rank score 86.6Trust 31/60Price index 69.9 (much lower)Lab certificates for 7 of 8 products

Ramp Peptides ships from a US warehouse on the next business day after payment. Priority shipping is free over $200, and overnight shipping is offered. It takes Zelle, cards, Apple Pay (with Klarna and Affirm) and Bitcoin.

Website: ramppeptides.com →

Why Ramp Peptides ranks here

Its test record is strong for a small shop. We read dated certificates from Freedom Diagnostics for 18 peptides, about 59 days old on average, and 13 were tested more than once. All 89 purity results met 99%. The weak points: 33 of 70 vials were more than 10% off the label, and it has only 7 reviews, all on one community site.

Keep in mind. It is a small shop with a short public history. Check the vial amount on the report for your batch.

Ramp Peptides sources (): Supplier website · Shipping policy.

4. Elite Edge Biotech

Rank score 85.9Trust 30.7/60Price index 70.1 (much lower)Lab certificates for 3 of 19 products

Elite Edge Biotech lists an address in Sparks, Nevada, and ships to US addresses, free over $200. It takes Visa, Mastercard, Cash App, Zelle and ACH, with 10% off for ACH. Cash App and Zelle payments are due within 30 minutes.

Website: eliteedgebiotech.com →

Why Elite Edge Biotech ranks here

About 175 external reviews average 4.8, and the company replies to negative ones. Its reports name MZ Biolabs, but we could not date any certificate or check vial amounts, so its lab evidence is thin. We found no Reddit discussion.

Keep in mind. Some buyers report labeling and batch-number problems. Check that your vial’s batch has a published report.

Elite Edge Biotech sources (): Supplier website · Payment options · Shipping policy.

5. Step One Ventures

Rank score 84.3Trust 28.2/60Price index 58.7 (much lower)Lab certificates for 8 of 8 products

Step One Ventures ships by FedEx, UPS or USPS, the same day for weekday orders by 2 PM EST. Shipping is free over $250, and code SAVE10 gives 10% off. It takes Zelle, ACH and cards.

Website: s1research.net →

Why Step One Ventures ranks here

It has a deep test record: dated certificates for 22 peptides, about 5 months old on average, with 17 retested. Only 3 of 154 purity results were below 98%. But 39 of 85 vials were more than 10% off the label, mostly overfilled, and we found only 1 external review on the main review site.

Keep in mind. Reports come from several labs, so check which lab tested your batch. Two reviews elsewhere say the product did not work.

Step One Ventures sources (): Supplier website · FAQ.

6. Licensed Peptides

Rank score 83.9Trust 30.6/60Price index 76.1 (much lower)Lab certificates for 4 of 6 products

Licensed Peptides ships only inside the US, usually the same business day for orders paid before 4:00 PM PST. FedEx 2-Day is free over $200, otherwise $11.95. It runs a two-for-one vial sale and 10-vial bulk offers.

Website: licensedpeptides.com →

Why Licensed Peptides ranks here

It publishes many reports, mainly from Vanguard Laboratory and Ethos Analytics: 52 dated certificates for 24 peptides, 15 tested more than once. About 790 external reviews average 4.8, though the count grew fast. The weak point: 14 of 128 purity results were under its 99% claim, and 16 of 114 vials held less than the label.

Keep in mind. Its certificates average about 198 days old. Check purity and vial amount on the report for your batch.

Licensed Peptides sources (): Supplier website · Shipping policy · Testing method.

7. Silverstone Labs Co

Rank score 83.9Trust 28.1/60Price index 59.2 (much lower)Lab certificates for 7 of 13 products

Silverstone Labs Co ships from the US, and orders before 3 PM CST can ship the same day. You pay by card through an emailed link, or by Zelle or Venmo.

Website: silverstonelabsco.com →

Why Silverstone Labs Co ranks here

It shows an ILS Labs batch report before you buy, and all 11 purity results we read met 98%. The weak points: its reports average about 7 months old, 4 of 7 vials were more than 10% over the label, and it has only 9 external reviews.

Keep in mind. It runs two websites, silverstonelabsco.com and silverstonelabspeptides.com. Check which one you are paying.

Silverstone Labs Co sources (): Supplier website · FAQ.

8. Purus Peptides

Rank score 83.5Trust 31.8/60Price index 85.4 (lower)Lab certificates for 7 of 10 products

Purus Peptides ships by UPS inside the US. Orders paid before 1:00 PM EST on weekdays ship the same day, and orders over $250 ship free. Each lot has a Janoshik code you can check on Janoshik’s site.

Website: puruspeptides.com →

Why Purus Peptides ranks here

Reddit users have checked its Janoshik reports, though some posts push discount codes. We matched 29 dated certificates to 20 peptides, about 68 days old on average, and 40 of 41 purity results met 98%. But 14 of 21 vials were more than 10% off the label, and it has only 26 external reviews.

Keep in mind. Vial amounts often differ from the label, mostly on the high side. Check the measured amount for your lot.

Purus Peptides sources (): Supplier website · Shipping policy · FAQ · Lab reports.

9. ezPeps

Rank score 82.8Trust 31.8/60Price index 87.9 (lower)

ezPeps ships from metro Detroit to all 50 states and Puerto Rico. Weekday orders by 3:00 pm ET ship the same day, mostly by UPS, usually arriving in 2-3 business days. Orders over $199 ship free.

Website: ezpeps.com →

Why ezPeps ranks here

Its reviews are its strength: about 211 external reviews average 4.8. It publishes reports from ILS Labs and Freedom Diagnostics, the newest from September 2026. But we could not match any certificate to a dated result, so we have no vial or purity checks.

Keep in mind. Scan the QR code on the vial and read the report for that batch yourself.

ezPeps sources (): Supplier website · Shipping policy · Lab reports.

10. Peptidology

Rank score 82.4Trust 33.4/60Price index unrated

Peptidology ships from Scottsdale, Arizona, to US addresses only, within one business day of a verified order. It advertises FedEx 48-hour delivery, 60-day returns and 3-8% off kits.

Website: peptidology.co →

Why Peptidology ranks here

About 118 external reviews average 4.7, and Finnrick rates it A to B from 16 samples. In our claims check, 10 of 14 vials matched the label and all 17 purity results met 98%. But we matched only 11 dated Vanguard Laboratory certificates to 8 peptides, about 158 days old on average.

Keep in mind. Check that the certificate for your exact lot is in its library before ordering.

Peptidology sources (): Supplier website · Shipping policy · Lab reports.

Shop by peptide

Need one compound? Its page shows every US supplier’s price for the same vial.

Before you buy from a US supplier

Shipping can change the total on a small order. Free shipping starts at $50 at Panda Peptides, $200 at Licensed Peptides, PeakForce Labs and Elite Edge Biotech, and $250 at Purus Peptides and Step One Ventures.

A testing claim is not a report. Find the certificate for the lot you receive and check that the lab, date and lot code match. See our COA guide.

Scoring method for US suppliers

Trust has four parts: lab verification by PeptideScanner (40 points), reviews on other sites (20), community reports (15) and transparency (25). Suppliers we have not lab-tested are scored out of 60. The top trust score among US suppliers counts as 100 for the rank. PSV methodology.

For price, an index of 70 earns 80 points and an index of 110 earns 40. Unrated suppliers sit at 50, the same as a supplier at the median.

A supplier with an unresolved problem cannot enter the top 10: a profile flag, fake-product or non-delivery reports, a pharma lawsuit or a suspicious burst of reviews. It stays in the complete list. Ratings are for research comparisons only.

US supplier FAQ

Does a low price push a supplier to the top?

Only partly. Trust makes up 70% of the score, so good lab reports and reviews matter more. Price can move a supplier a few places.

How do I read the price index?

It compares matched vials with the median price at other US suppliers. An index of 70 is about 30% under that median, and 110 is about 10% over.

What if a supplier has no price index?

It gets 50 price points, like a supplier at the median. An index needs three peptides with in-stock matches at two or more other suppliers.

Do these suppliers ship to every state?

Most do, but some leave out territories or PO boxes.

Are the certificates from PeptideScanner?

No. Suppliers pay outside labs for these reports. When a score is out of 60, our own lab result is not part of it.

All 228 US suppliers

Ordered by rank score. Each name links to a profile with prices and lab reports.

Open the list of 218 more suppliers
SupplierTrust scorePrice grade
Modified Aminos34.2/60Much lower
RuoBio30.4/60Much lower
Elutide32.7/60Unrated
Glacier Aminos34/60Higher
Oasis Labs33.2/60Near benchmark
Forge Performance Co.30.1/60Lower
Accelerate Labs29.3/60Lower
Vector Amino Labs28.3/60Much lower
Eros Peptides26.7/60Much lower
Next Gen Peptides31.2/60Unrated
PeakForce Labs31/60Near benchmark
Pure Health Peptides26.3/60Much lower
RetaOneLabs25.2/60Much lower
Blue Ridge Peptides27.4/60Lower
Mile High Compounds30.2/60Unrated
BioEdge Research Labs30.4/60Near benchmark
LA Peptides30.1/60Unrated
Honest Peptide29.9/60Unrated
Onyx Biolabs30.4/60Near benchmark
Sports Technology Labs30.3/60Near benchmark
Nova Peptides US30.2/60Near benchmark
FelixChem31.1/60Higher
BioPep29/60Unrated
Modern Research Peptides23.5/60Much lower
Full Scale Peptides28.6/60Unrated
Phase One Labz22.8/60Much lower
Ascend Amino26.6/60Lower
Global Aminos30.1/60Higher
Verified Peptides27.3/60Near benchmark
NuRev Peptides28.4/60Near benchmark
Oath Peptides28.3/60Unrated
Biopeptitech25.9/60Lower
Voltera Sciences28.8/60Near benchmark
NuScience Peptides27.4/60Near benchmark
Aūra Research27.6/60Unrated
Peptide Minds26.9/60Near benchmark
HYTE Research Division27.4/60Near benchmark
Puratek Peptides23.4/60Much lower
Double R Labs23.6/60Much lower
Peptira29.8/60Much higher
Pure Amino26.5/60Unrated
Optimum Formula22.2/60Much lower
Evolve BioPep21.1/60Much lower
OROS Research24.2/60Lower
MyPurePeptide19.4/60Much lower
Loti Labs26.2/60Unrated
NorthStar Compounds26.2/60Unrated
Research Peptides Lab26.1/60Unrated
Vantyx Research25.4/60Near benchmark
Kylo Peptides25.8/60Unrated
Fit Peptides25.5/60Unrated
Offline Peptides25.5/60Unrated
Simple Peptides25.5/60Unrated
Core Peptides25.5/60Near benchmark
SaiyanMed17.7/60Much lower
EZ Peptides24.9/60Near benchmark
Peptide Crafters21.6/60Much lower
Peptide Pros24.8/60Near benchmark
Bulk Peptide Supply19.2/60Much lower
GMR Peptides24.6/60Unrated
Injectify24.6/60Unrated
StarBio24.6/60Unrated
Ascension Peptides27.2/60Higher
Revitalized Research24.5/60Unrated
Synova Supply24.5/60Near benchmark
Instant Peptides22.6/60Lower
Backroad Aminos21.5/60Lower
AMP Peptides24/60Near benchmark
PeptidePlugs21.5/60Lower
24 Peptides23.7/60Unrated
Swiss Chems22.6/60Near benchmark
Trusted Aminos22/60Lower
Fusion Peptide17.5/60Much lower
Nextech Laboratories28.4/60Much higher
VANDL19.4/60Much lower
Crush Research23.1/60Unrated
PepTech19.5/60Much lower
Peptide Hub23/60Near benchmark
Koi Peptides25.1/60Higher
Nationwide Peptides24/60Near benchmark
Renova Peptides22.3/60Unrated
Thrive Peptides21/60Near benchmark
One Day Compounds21.9/60Near benchmark
Peptide Source21.1/60Near benchmark
Prime Peptides US22.1/60Unrated
Coastal Peptides21.9/60Unrated
RISYNTH BIO21.6/60Unrated
Vortex Research21.6/60Unrated
Amino Amigos21.8/60Near benchmark
Blank Peptides26.2/60Much higher
Umbrella Labs21/60Unrated
Go Alpha Labs22.8/60Higher
Protide Health25.2/60Much higher
Ignite Peptides20.1/60Near benchmark
Vespera Peptides20.7/60Unrated
AminoVault26.1/60Much higher
Proxiva Peptides21.7/60Near benchmark
Atomik Labz20.5/60Unrated
Longevity Pro Labs20.4/60Near benchmark
Crownwell Research20/60Unrated
BulkGLP24/60Much higher
Riptide Wellness19.7/60Unrated
Liberty Peptides19.2/60Near benchmark
Peptide Foundry19.5/60Unrated
Solyn Peptides19.4/60Unrated
Peptide Hackers19.2/60Unrated
Purified Peptide19.2/60Unrated
Power Peptides18.8/60Unrated
Imagine First17.9/60Near benchmark
American Peptides25.7/60Much higher
Prestige Sciences19.5/60Near benchmark
Olympex Solutions18.5/60Unrated
Alera Research15.5/60Much lower
Bio Longevity Labs25.8/60Much higher
Chimera Peptides18.3/60Unrated
ANKR Lab20.9/60Higher
Simms Research18.1/60Unrated
Molecular Solutions16.2/60Lower
Valar Peptides16.7/60Near benchmark
Capstone Peptides22.9/60Much higher
ThreeSide Peptides24/60Much higher
Modern PeptidesFlagged17.4/60Unrated
Uther Peptide17/60Unrated
AMC Essentials15.3/60Near benchmark
Paramount Peptides20.5/60Much higher
Alpha Omega Peptide17.8/60Near benchmark
Titan Research19.4/60Much higher
Priority Peptides14.9/60Near benchmark
Rocky Mountain Compounds10.9/60Much lower
Research Ready Peptides17.9/60Higher
Soma Chems16.7/60Near benchmark
Royal Peptides US19/60Much higher
Modern Aminos16.2/60Near benchmark
Biotech Peptides17.9/60Higher
National Science Labs, LLC16.9/60Near benchmark
Society Peptides15.1/60Near benchmark
TEX PEPTIDES14.5/60Near benchmark
LiveWell Peptides19.7/60Much higher
Pure Peptide Labs15/60Near benchmark
Pure Tested Peptides20.3/60Much higher
Research Chemical20.4/60Much higher
Pivot labs21.5/60Much higher
Warrior Makers20.7/60Much higher
Ion Peptide12.4/60Near benchmark
Southern Aminos12.4/60Near benchmark
Optimal Bio Labs10.8/60Lower
Pura Peptides13.9/60Near benchmark
Peptidic18/60Much higher
Blue Sky Peptide12.4/60Unrated
Chemyo12.4/60Unrated
Valor Peptides10.9/60Near benchmark
FITSKNS12.2/60Unrated
Bio Infinity Lab12.1/60Unrated
Orvella Labs11.5/60Unrated
River City Aminos7/60Much lower
Behemoth Labz10.9/60Unrated
BioCollex10.9/60Unrated
Limitless Biotech10.9/60Unrated
Omegamino10.9/60Unrated
Peptide Warehouse10.9/60Unrated
Peptide Partners10.7/60Unrated
Pepsynth Labs17.9/60Much higher
BleauGenics10.9/60Near benchmark
AminoQuest Labs®16.2/60Much higher
Planet Peptide10/60Unrated
QSC Peptides10/60Unrated
Top Peptides6.9/60Lower
Pure Rawz12/60Higher
Regentide17/60Much higher
Real Peptides9.4/60Near benchmark
High-Purity Peptides1.5/60Much lower
Mindful Research10/60Near benchmark
Skye Peptides8.5/60Unrated
Prime Lab Peptides12/60Much higher
Welli Labs4.5/60Much lower
Trivial Bioworks4.5/60Much lower
Nela Peptides3/60Much lower
Limitless Bio-Tech5.4/60Near benchmark
Astro Peptides USA6.9/60Near benchmark
Bulk Peptide Wholesale1.5/60Much lower
Throne6/60Unrated
MOB Biotech5.4/60Near benchmark
Paradigm Peptides5.4/60Unrated
Pulse Peptides5.4/60Unrated
Raw Amino10.7/60Much higher
Dorova Research1.5/60Much lower
Aurora Peptides1.5/60Much lower
AnaSpec4.5/60Unrated
DRP Research4.5/60Unrated
OP Labs4.5/60Unrated
Amino Asylum3/60Near benchmark
Amino USA3/60Near benchmark
DN Research3/60Unrated
Pen Peptide Bulgaria3/60Unrated
UK Peptides3/60Unrated
Steady Meds5.3/60Higher
Elite Biogenix10/60Much higher
Péptidos Colombia2.3/60Unrated
Solution Peptides3/60Near benchmark
Rhome Research LLC3/60Near benchmark
Cell Peptides3/60Near benchmark
NuLife Peptides3/60Higher
AAPPTEC1.5/60Unrated
Casa de Péptidos1.5/60Unrated
Coastal Compounds1.5/60Unrated
gopeptidos.com – GoPeptidos1.5/60Unrated
Innova BioTech Research1.5/60Unrated
Peptivia Lab1.5/60Unrated
Rescue Research USA1.5/60Unrated
RISYNTH BIO1.5/60Unrated
Superpharma Group1.5/60Unrated
LUXE AMINOS8.5/60Much higher
Enhanced Peptides3/60Higher
Evolution Peptides5.4/60Much higher
Global Peptides Supplies1.5/60Higher
Iron Peptides6/60Much higher
51Peptides1.5/60Much higher
Nordsci1.5/60Much higher
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