Retatrutide Vendor Reviews
All 53 reviews apply the same seven weighted criteria and list the facts we verified on each vendor's website and public sources, with the date we last checked them. Looking for the short version? See the ranking of the best places to buy retatrutide in the USA.
LEOLABRX Review
Janoshik-tested retatrutide with published batch numbers, free bacteriostatic water with every vial, 7 sizes from 10 to 60 mg and US shipping via USPS.
Panda Peptides Review
Low prices, per-size Janoshik and ILS reports, and free US shipping from $50 — but the product page never names retatrutide.
Midwest Peptide Review
Per-size Precision Mass Spec COAs from September–October 2026 with endotoxin, sterility and heavy metals, phone support and a 4.9 Trustpilot score.
Ion Peptide Review
Low prices, recent full-panel Freedom Diagnostics COAs and 435 Trustpilot reviews — but the compound is sold under the code name 'ION-3R'.
Platinum Lion Peptides Review
Low per-mg prices and ILS/MDx COAs that confirm retatrutide, from a store with a 2023 domain and 4.8 on Trustpilot. You need an account to see the store.
Rejuven8 Peptides Review
September 2026 Freedom Diagnostics COAs for every vial size, low prices and a 30-day refund policy, but no street address.
FITSKNS Peptides Review
Three independent labs, including a September 2026 panel with endotoxin, sterility and heavy metals, plus a 4.9 Trustpilot score; all sales are final.
Honest Peptide Review
Batch-numbered Freedom Diagnostics and Janoshik reports for every batch sold, free shipping from $120 and a 30-day problem window.
Peptide Foundry Review
September 2026 Freedom Diagnostics COA with endotoxin and microbial testing, free UPS 2-day shipping with lost-package cover, but high prices and no reviews yet.
Purgo Labs Review
Cheap large vials, a new 10 mg lot every few weeks tested by ILS or Freedom Diagnostics, Arizona shipping and 60-day returns.
Nationwide Peptides Review
A disclosed Tennessee LLC with Freedom Diagnostics COAs for every vial size, but a one-year-old domain and only five Trustpilot reviews.
Pure U.S. Peptides Review
Retatrutide (sold as GLP3-R) from $2.99/mg at 60 mg, Vanguard COAs for every size and free shipping — but no address or phone.
Purus Peptides Review
Janoshik purity, endotoxin, heavy-metal and fentanyl reports for its retatrutide lots and same-day UPS shipping — but email-only support and a 5-day return window.
GigaCompounds Review
Five-vial Janoshik tests with measured endotoxin for every batch, FedEx 2-Day from Virginia and a buy-one-get-one offer — but all sales are final.
Licensed Peptides Review
Vanguard (ISO 17025) testing, cold-packed shipping and a 30-day money-back guarantee — sold as 'LP3-R' without naming the compound.
Core Research Peptides Review
Clearly labeled 'RETA (LY3437943)', same-day shipping from Texas, phone support and a reship-or-refund policy for lost packages.
Peptide Minds Review
Freedom Diagnostics COAs at 99.9% with an endotoxin test, CAS 2381089-83-2 on the listing, and a 4.7 Trustpilot score; all sales are final.
BioCollex Research Review
October 2026 Freedom Diagnostics COAs for each vial size, with endotoxin, microbial and heavy-metal results, but email-only support and no refunds.
HelixCore Biotech Review
Janoshik-tested retatrutide lots, 1-day dispatch and free reships for lost or damaged orders, from a store that launched in mid-2026.
NuRev Peptides Review
Per-lot retatrutide COAs from five US labs, the newest dated October 2026, shipped from California — but no card payments.
Premier Bio Labs Review
Retatrutide's CAS number on every size, ILS Laboratories COAs and deep sale prices from $19 — but its shipping policy still has template placeholders and all sales are final.
PS Peptides Review
Eight vial sizes, fentanyl screening on every lot and a wide payment choice — but no named lab and no refund policy.
Real Peptides Review
Heavily discounted 'Trinity-X (GLP3-RT)' with Freedom Diagnostics and Kovera COAs, shipped from Florida and California.
RNX Research Review
Clearly identified retatrutide at $49 for 10 mg with free shipping and an ILS lot COA, sold by a one-person shop with email-only support.
Apollo Peptide Sciences Review
Retatrutide named with its CAS number, a Janoshik report for each size and a California LLC address — but high per-mg prices and conflicting return rules.
Evolve Peptides Review
Chromate COA with sterility and endotoxin, a 60-day money-back policy and lost-package cover — but high prices and mixed Trustpilot reviews.
Prime Peptides Review
October 2026 Freedom Diagnostics COA at 99.8% and 30-day returns — but the company received an FDA warning letter in 2024.
Elite Edge Biotech Review
Low sale prices up to 100 mg vials, 30-day returns and a 4.8 Trustpilot score, but no retatrutide COA is published.
Endura Peptides Review
GLP-3R described as a GLP-1/GIP/glucagon triple agonist, a Freedom Diagnostics COA for each size and prices from $49 — but a small catalog and only two reviews.
PureDose Labs Review
Retatrutide by name with free express shipping and a Miami address and phone, but one undated-batch Janoshik test and an all-sales-final policy.
Full Scale Peptides Review
Freedom Diagnostics COA with lot and accession numbers and a clear reship-or-refund rule for lost parcels, but a single 10 mg size that is out of stock.
Greatest Peptides Review
Disclosed California LLC, same-day shipping and wide card acceptance; COA wording is inconsistent and claims must be made within 7 days.
Improved Peptides Review
Free same-day USPS Priority shipping on every US order and a Freedom Diagnostics COA, but only one vial size and a store-credit-first claims policy.
HEEZ Research Review
Full-panel lot COAs from Access Analytical and UPS 2nd Day or Overnight shipping, but no refunds and mixed early reviews.
Lost Coast Aminos Review
Very low sale prices and a COA for every size with endotoxin and heavy-metal results — but the product is never named on the page, all sales are final and payment is by Zelle, Cash App or invoice.
Arizona Peptides Review
Retatrutide COAs from MZ Biolabs and Bioviridian with mass-spec identity, but high prices, a wrong CAS on the product page and thin company details.
One Aminos Review
September 2026 ILS Laboratories COA tied to the lot on the product page, and buy-one-get-one pricing, from a four-month-old store with strict no-refund terms.
Zenergy USA Review
ZEN 3 RT in eight sizes with a large COA library from three US labs — but the compound is unnamed, product pages need an account and all sales are final.
Alpha Pro Peptides Review
Retatrutide's CAS number on the label and a buy-one-get-one sale, but only the 10 mg size was in stock and the company has no independent reviews.
Peptide Partners Review
The deepest public COA library and strong independent test results, offset by an August 2026 FDA warning letter and undisclosed shipping and payment details.
Primal Science Peptides Review
Retatrutide by name in 10–40 mg with low large-vial prices, but one Horizon Analytical COA for every size and no refunds once an order ships.
Alpha Carbon Labs Review
Janoshik-tested retatrutide in 5–60 mg with 15-day returns, but conflicting purity claims and an unstated shipping origin.
MyGLP1Store Review
Clearly labeled retatrutide at $3.50/mg, but the only COA is a 2025 manufacturer certificate and all sales are final.
NuLab Peptides Review
GLP3-RT from a store with a published Utah address and 14-day returns for store credit — but high prices and a COA for only one of four sizes.
V1 Peptides Review
Cheap 'GLP-3RT' vials up to 50 mg with Vanguard COAs for retatrutide, but the COA files carry a second company name under the visible one.
Merit Sciences Review
Clearly described triple agonist with 3- and 6-pack pricing and a written claims policy, but lab names are redacted from every COA.
GenX Peptides Review
A long-standing domain with a Houston street address, but no retatrutide COA, email-only support and store-credit returns.
Singular Biotech Review
A 2019 domain, phone support and a 30-day money-back policy, but high prices, a 2025 COA with the client name hidden, and human dosing claims on the product page.
PX1 Research Review
Clearly identified PX13-R (LY3437943) in six sizes from a store with a phone line and address, but no retatrutide COA we could see and no refunds.
True Peptides Review
Low prices on large vials, but no named lab, no visible COA, no address and 'all sales final' even for lost packages.
CoreVionRX Review
A single 30 mg retatrutide vial from a disclosed Florida LLC, but no published COA, no named lab and no reviews yet.
Revyv Science Review
Low prices on large vials, but its posted COAs were ordered by other clients, it lists only a PO box, and all sales are final.
BioInfinity Review
Polished site with clear UPS rates, but a COA we could not open from a lab we could not verify, and a 15% restocking fee.
No vendors match your search.