The Directory
VENDORS
Every vendor we track, graded on an algorithmic Stacked Score. Transparent categories, published methodology, FDA warning history — no pay-for-placement.
33 retail vendors · 1 marketplace · for research purposes only
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Stacked Score
Pantheon Peptides
pantheonpeptides.com
GMP-compliant presentation — most polished product pages + third-party lab results we track · Deep Cycles program line (Wolverine, Glow, ProVita, Alpha Mind, T-Force Immunity, etc.) — pre-sequenced multi-week protocols, not just vials
Stacked Score
Evolve Peptides
evolvepeptides.com
Deepest single-peptide GLP-1 tiering we track — Tirzepatide / Semaglutide / Retatrutide each in 5 / 10 / 15 / 20 / 30mg+ increments, up to 60mg (Tirz) and 50mg (Reta) · Strong blend line (KLOW 80, GLOW 70, Tesa+Ipa, BPC+TB, Selank/Semax) with the standard formulations we cover across vendors
Stacked Score
Nova Peptide Supply
novapeptidesupply.com
Independent third-party COAs from Freedom Labs on every product — same independent peptide-testing operation Iron Peptides uses, published in a searchable per-batch database at /coas/ · Only vendor in our directory with a dedicated intranasal spray line — NAD+ (1000mg), PT-141 (10mg), MT-2 (10mg), and N-Acetyl-Selank (5mg) for researchers exploring alternative delivery models
Stacked Score
Apollo Peptide Sciences
apollopeptidesciences.com
Deepest GLP-1 catalog we track — includes 60mg single vials and multi-packs for bulk research · Competitive $/mg at higher sizes, especially Tirzepatide and Retatrutide
Stacked Score
Perfect Peptides
perfectpeptides.com
Third-party COAs from Chromate Lab (community-independent peptide testing CRO) on every product — each COA carries a batch number, access code, and QR pointing to chromate.org/verify for independent confirmation · Fast US fulfillment — FedEx 2-Day Air, FedEx Overnight, FedEx Saturday delivery, USPS Priority all available; same-day shipping before 12pm PST; free standard shipping on orders over $200
Stacked Score
Ascension Peptides
ascensionpeptides.com
Transparent product descriptions with molecular data · Broad catalog covering healing, longevity, GLP-1, and GH secretagogues
Stacked Score
Iron Peptides
ironpeptides.is
Broadest catalog we track — 91 products across injectable vials, nasal sprays, oral capsules, and pre-mixed stacks (~38 injectable single-peptide SKUs seeded here; sprays/caps/blends tracked separately) · Multi-format delivery options uncommon elsewhere: nasal sprays for BPC-157 / TB-500 / GHK-Cu / VIP / DSIP / PT-141, and oral capsules for research-capsule protocols
Stacked Score
LA Peptides
lapeptides.net
Independent third-party COAs from BioViridian on every product — same independent peptide-testing operation Almighty Peptides uses, published in a searchable per-batch database at /product-certificates/ · Broadest Khavinson bioregulator catalog in our directory — Vilon, Vesugen, Pinealon, Pancragen, Ovagen, Crystagen, Cardiogen, Testagen all priced uniformly at $59.99/20mg, the cleanest pricing we've seen on the bioregulator class
Stacked Score
Swiss Chems
swisschems.is
Deepest non-GLP-1 catalog we track — bioregulators, GH-axis peptides, and niche research compounds · Full Khavinson bioregulator line (Chonluten, Pinealon, Cortagen, Cardiogen, Livagen, Ovagen, Pancragen, Vilon, and more)
Stacked Score
Modern Research Peptides
modernresearchpeptides.net
Public per-batch COA library at /coa/ with date-stamped PDFs from Freedom Diagnostics, a peptide-specialized US testing lab with searchable verification at FreedomDiagnosticsTesting.com · Recent BPC-157 10mg COA shows 99.19% average purity by HPLC + UV detection coupled with mass spectrometry
Stacked Score
NextGen Peptides
ngpeptide.com
Among the most aggressive per-mg pricing we track across the GLP-1 class — Tirzepatide (TRZ-2) at roughly $2–3/mg single-vial and Retatrutide (GLP-3) at roughly $3.30/mg undercut every other vendor's single-vial pricing at comparable sizes · Deep per-vial tiering on Tirzepatide (20 / 30 / 40 / 60 mg) — larger sizes for extended protocol research without needing a 10-vial kit commitment
Stacked Score
Purity Peptides
puritypeptides.ca
Strong bioregulator depth — Cortagen, Vilon, Pinealon, Pancragen, and Vesugen are all in catalog (Khavinson-protocol research compounds rarely stocked at most peptide vendors) · Three-tier Retatrutide sizing (10 / 20 / 30 mg) and two-tier Tirzepatide (10 / 20 mg) — researchers running scaled GLP-class protocols don't need to buy multiple smaller vials
Stacked Score
Platinum Lion Peptides
platinumlionpeptides.com
Aggressive shipping — same-day fulfillment on orders before 12PM EST weekdays, plus 3-day FedEx Ground at no extra cost. Fastest domestic shipping promise across our tracked vendors · Deep GLP-class tiering: Tirzepatide (GLP-2 T) at 15 / 30 / 50 / 60 mg, Retatrutide (GLP-3 R) at 10 / 20 / 30 / 60 mg, Semaglutide (GLP-1 S) at 10 / 20 mg
Stacked Score
Royal Peptides
royal-peptides.com
Unusually deep 127-product catalog — one of the widest SKU counts we track, covering the mainstream injectables plus a long tail of less-common compounds (FOXO-4, Pinealon, Thymalin, ARA-290, SNAP-8, VIP, Oxytocin) · Aggressive per-mg pricing on the GLP class — Retatrutide at $8/10mg single-vial ($8.00/mg) and Tirzepatide at $50/10mg ($5.00/mg) sit in the low tier of our tracked single-vial pricing
Stacked Score
Limitless Biotech
limitlessbiotech.com
USA-made, published research-grade peptides with BigCommerce storefront polish · Deep research-category taxonomy (Cognitive, Metabolic, Musculoskeletal, Cardiovascular, Mitochondrial, Circadian, Reproductive, Cellular Longevity, Dermatological, Hormonal) — easy to explore by goal
Stacked Score
Southern Aminos
southernaminos.com
Deep bioregulator + cognitive catalog — Pinealon, Cerebrolysin, Kisspeptin, Semax, Selank, plus modern GLP-class · Public Certificate-of-Analysis page and dedicated Package-Claims page — good baseline transparency on the trust-signal side
Stacked Score
DelixLabs
delixlabs.com
Janoshik Analytical (community-independent peptide testing) on every batch with a public per-batch verification key system — customers can paste any batch's key directly into janoshik.com/verify to pull the original signed HPLC report. Strongest verifiability tier we've seen across the directory · Recent BPC-157 5mg COA: 99.034% purity by Janoshik
Stacked Score
Stillwater BioLabs
stillwaterbiolabs.com
Vanguard Lab UKAS ISO/IEC 17025:2017 accredited HPLC testing on every batch (peptide-specialized accredited lab, same tier as Chromate / Freedom / BioViridian) — ≥99% chromatographic purity guarantee · Public per-batch COA library — every batch's certificate accessible by direct URL at /coa/<slug>-<batch>.pdf (e.g. gip3-retatrutide-V260212-5.pdf), with the Vanguard batch number on the file
Stacked Score
Certified Peptides
certified-pep.com
Strong third-party testing posture — vendor brands itself around "rigorous third-party testing in leading U.S. laboratories" and maintains a public COA library page surfaced in the site nav (most vendors we track don't expose a public COA repository) · Four-tier Retatrutide sizing (GLP3-R: 10 / 30 / 40 / 60 mg) and three-tier Tirzepatide (GLP2-T: 10 / 30 / 60 mg) — the 60mg single-vial sizes are uncommon at any price tier
Stacked Score
Almighty Peptides
almightypeptides.com
Posted BUY-1-GET-1-FREE promotions lower effective $/mg on most SKUs · Broad catalog across peptides + adjacent research chemicals
Stacked Score
AminoVault
aminovault.com
USA-made, GMP-certified presentation with a public Lab Results page (aminovault.com/lab-tests) and a per-vial COA shipped in-box · Multi-size SKUs on hero peptides (BPC-157 10 / 20 mg; Retatrutide 20 / 30 mg) — scales cleanly across protocol dose ranges
Stacked Score
Reta One Labs
retaonelabs.com
Public per-batch COA gallery at /test-results/ from Kovera Labs (independent compound testing CRO in Buffalo Grove, IL with HPLC/LC-MS purity + identity testing and verifiable COAs) — same community-independent tier as Janoshik / Finnrick / Vanguard / Chromate · Aggressive Retatrutide tiering — six single-vial sizes (RO-3R 10/20/30/40/50/60mg) covering the full dose-scaling range without committing to a 10-vial kit
Stacked Score
Helixion Labs
hlxlabs.shop
Tirzepatide IS in catalog ('Tirz: Dual Agonist' at 5mg/30mg) — covers the GLP slot many of our smaller peers (DelixLabs, Stillwater) skip · Retatrutide ('RT-3: Triple Agonist') and Cagrilintide-class compounds covered alongside the standard injectables
Stacked Score
Ignite Peptides
ignitepeptides.com
Carries the full GLP-1 class (Tirzepatide, Retatrutide, Semaglutide) in multiple sizes · Competitive single-vial pricing versus the US market average
Stacked Score
Puratek Peptides
puratekpeptides.com
Aggressive single-vial GLP-1 pricing — Tirzepatide (PUR-2T) at $39.95 for 15mg ($2.66/mg) and $89.95 for 60mg ($1.50/mg), Retatrutide (PUR-3R) at $44.95 for 10mg ($4.50/mg) and $64.95 for 20mg ($3.25/mg), among the lowest tier we track at comparable sizes · Four-tier Retatrutide sizing (PUR-3R: 10 / 20 / 30 / 40 mg) — the 40mg vial is uncommon at any price tier
Stacked Score
True Peptide Labs
truepeptidelabs.com
Aggressive multi-tier GLP-class sizing — Tirzepatide (GLP-2TZ) in 4 sizes (10/15/30/60mg), Retatrutide (GLP-3RT) in 3 sizes (10/15/30mg), Semaglutide (GLP-1SG) in 4 sizes (10/15/20/30mg). Researchers running scaled protocols can buy a single larger vial instead of multiples · 60mg single-vial Tirzepatide ($250) and 30mg single-vial Retatrutide ($190) — uncommonly large sizes at this price tier
Stacked Score
Guru Peptides
gurupeptides.com
Aggressive single-vial pricing — many peptide SKUs land in the $20-$35 range, with Tirzepatide (GLP-1/GIP RA) at $69.95 for 5mg ($14/mg) and $109.95 for 10mg ($11/mg), Retatrutide (GLP-3) at $69.95 for 5mg ($14/mg) and $159.99 for 15mg ($10.66/mg) · Established storefront with copyright dating to 2017 — longer operating history than most newer vendors
Stacked Score
Noxamino
noxamino.com
Aggressive GLP-class single-vial pricing — Tirzepatide (GLP-2T) at $75/10mg ($7.50/mg) and $90/20mg ($4.50/mg), Retatrutide (GLP-3R) at $85/10mg ($8.50/mg) and $150/30mg ($5.00/mg), among the lower tier we track at comparable sizes · Tight 25-SKU catalog focused on mainstream research compounds — less decision fatigue than 50+ SKU vendors
Stacked Score
SolXGenix
solxgenix.com
Per-product COAs from Analytical Formulations, Inc. (AFI) — cGLP-certified contract testing lab operating since 2008. Recent Semax 10mg COA: 99.9% purity, 10.35mg quantitative assay vs 10mg label claim, < 10 ppb total heavy metals, 0 CFU microbial counts on both TAMC and TYMC tests · Deepest niche compound catalog in our directory — PNC-27, ACE-031, GDF-8, FOXO4, N-Acetyl Epitalon Amidate, Pinealon, GHRP-6 Acetate, Hexarelin all in stock alongside the standard injectables
Stacked Score
Renova Peptides
renovapeptides.net
Vanguard Laboratory A2LA-accredited (ISO 17025:2017) HPLC testing on every batch · Public per-batch COAs at /certificates/ — recent Retatrutide 50mg COA shows 99.24% ± 0.18% chromatographic purity by HPLC-UV/VIS, A2LA Certificate #6377.01.01 referenced
Stacked Score
Pepvida
pepvida.com
Tightly curated 7-SKU catalog — emphasizes core research peptides over sprawling selection, easier to navigate for first-time buyers · Public Lab Results page (pepvida.com/lab-results) with per-batch testing documentation
Stacked Score
Lumen Peptides
lumenpeptides.co
Aggressive single-SKU pricing — BPC-157 10mg at $5.50/mg, Tesamorelin 10mg at $8.00/mg, Retatrutide 10mg at $7.00/mg land in the lower tier of our tracked vendors · Tight 9-SKU curation focused on core research peptides + a handful of hero blends — less decision fatigue than 50+ SKU catalogs
Stacked Score
RNX Research
rnxresearch.com
Tight 7-SKU catalog focused on the mainstream injectable peptides — less decision fatigue than 60+ SKU storefronts · Vendor states ≥99% HPLC/MS verified purity across the catalog
Marketplaces
Multi-supplier platforms aggregate independent international suppliers under a single checkout. Pricing is not indexed in our price tracker because manufacturer-tier $/mg is not directly comparable to retail vendor pricing — and we do not assign a Stacked Score to marketplaces because the methodology is built around single-storefront accountability. Read the methodology note.
