ResearchPeptidesLab
researchpeptideslab.com
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Compiled automatically from the dated observations in this vendor's record. How we evaluate.
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ResearchPeptidesLab's retatrutide certificate is independently confirmed: querying Freedom Diagnostics' own public register directly turns up accession 2512310166 among the lab's 42 listed certificates for this client, with purity read as 99.965% by HPLC-UV with mass spectrometry. The document itself carries two flaws visible on its face: the field labeled "Lot" holds 2381089-83-2, which is retatrutide's CAS registry number rather than any batch code, and the certificate's Reported Date of 1/1/2025 precedes its own Received Date of 12/31/2025 by nearly a year; the site further prints several different purity figures for the same compound elsewhere, none tied to a lot. Whether a real batch-specific lot number exists behind that mislabeled field, and which figure a buyer should actually trust, is left for someone who has ordered from this vendor to document.
What the record holds
SAME DAY, CUTOFF STATED
“same-day dispatch before 2:00 PM ET”
USPS Priority Mail standard $9.99 (3-5 business days) or Express $24.99 (2 business days), free over $200, US addresses only, tracking emailed.
Read from this supplier's own pages on 2026-08-24. This publication has never placed an order with any supplier. This row records what is written and measures nothing about what actually happens after an order.
$85.00
Compound retatrutide 10mg
Listed as GLP-3RT, SKU RET-10, size 10mg
Price as recorded $85.00 (shown against a struck-through $150.00)
Read on 2026-08-24. One reading on one day, and prices are not tracked over time here.
A Trustpilot listing for this supplier was readable on 2026-08-25.
The listing showed a score of 4.6 out of 5 across 25 reviews on that date.
Terminus read the standing of the listing itself and nothing under it. The reviews behind any figure above were not gathered, read, or checked here, and no reader review on this site feeds that number.
19 claims from this publication's own dossier on this supplier were read again against the live site on 2026-08-24: 17 held, 2 corrected before publication.
A corrected claim is an error of ours that the re-read caught before it reached a page. This line tracks this publication's own accuracy. It says nothing about the supplier.
Dated entries
3 observations on file, recorded 2026-08-24. Newest first, appended and never rewritten.
On certificates: published openly, method-qualified, lab named, and independently corroborated at the lab, but indexed by SKU size rather than by lot. A public index at /coas/ lists certificates as product plus vial size, each with a Download button, and the files are hosted unauthenticated on the vendor's own domain at /wp-content/uploads/coas/ with filenames like "GLP-3RT 10mg.png". There is no lot in the filename or the index. I downloaded and read the retatrutide 10mg certificate in full. It is issued by Freedom Diagnostics: accession number 2512310166, client Research Peptides Lab, search code Rese2512310166, product "Retatrutide 10mg", identity "GLP RT", purity 99.965%, appearance "White Lyophilized Powder", net peptide content "Not Requested", signed by Stephen Schmidt, Principal Chemist. Method is stated on the face of the document: "All Chemical Analysis was performed by HPLC with UV Detection Coupled with Mass Spectrometry", with a UV chromatogram at 214nm and an accompanying mass spectrum showing [M+3H]3+ at 1577.13 and [M+2H+2Na]4+ at 1194.33. The footer adds that the analysis "was conducted using LCMS/MS". Freedom Diagnostics is independently reachable at freedomdiagnosticstesting.com, which gives its address as 133 Holiday Ct Suite 106, Franklin, TN 37067, states "Est. 2023", and runs a public lookup claiming 42,378 searchable certificates. I queried that lookup directly rather than trusting the vendor's copy: the lab's own public register returns 42 certificates for this client and accession 2512310166 is among them, so the document the vendor publishes does exist in the issuing laboratory's index. The lab's site makes no ISO 17025, A2LA, CLIA or CAP claim and publishes no accreditation number, so accreditation is UNVERIFIED and appears not to be claimed.
On prices and policies: prices are visible to a guest after clicking through the entry modal. Retatrutide is sold as "GLP-3RT" with variant prices read from the page's own product data: 10mg $85.00 (SKU RET-10, struck through from $150.00), 20mg $150.00 (from $250.00), 30mg $190.00 (from $270.00), 40mg $230.00 (from $330.00) and marked backorder. Semaglutide is "GLP-1SG" from $80.00 down to $65.00 and tirzepatide is "GLP-2TZ" from $110.00 down to $75.00. Other recorded prices: BPC-157 from $75.00, TB-500 from $100.00 down to $65.00, GLOW from $180.00 down to $145.00, KLOW from $200.00 down to $165.00, Bacteriostatic Water from $15.00, PT-141 from $55.00. Twenty-six products are listed. Shipping published as USPS Priority Mail standard 3 to 5 business days at $9.99, Priority Mail Express 2 business days at $24.99, free over $200, same-day dispatch before 2:00 PM ET, tracking emailed, plain unmarked outer packaging, United States addresses only, "shipped with desiccant and sealed packaging" and "cold-pack inserts at no additional charge" for sensitive compounds or warm weather. Returns are accepted for damage, wrong item, missing items, and "Purity below stated specification", excluded for change of mind, opened or reconstituted product, improper storage, and carrier delay, resolved within 2 business days, refunds to the original payment method in 5 to 10 business days. Payment methods visible without transacting are contradictory across the site and are recorded as a caution below. Research-use-only language is heavy and present at every point I loaded: a top bar on every page, two separate entry modals, a product-page disclaimer block reading "This product is intended for laboratory and research use only. Not for human or veterinary use, food, cosmetic, or household applications", and a footer line.
CAUTIONCautions, all read on the site today. 1. The certificate's "Lot" field does not contain a lot. On the retatrutide 10mg certificate the Lot reads 2381089-83-2, which is the CAS registry number for retatrutide, printed identically on the vial photographed inside that same certificate ("CAS No.: 2381089-83-2"). Combined with a COA index keyed to vial size rather than batch, there is no batch identifier a buyer can match to a vial. 2. Its own dates are impossible: the certificate gives Received Date 12/31/2025 and Reported Date 1/1/2025, a report dated almost a year before the sample arrived. 3. Four different purity figures for one compound: the certificate says 99.965%, the homepage stat block says "Purity 99.2%" and "Stability 98.7%", the COA page header says "99.4%+ Average Purity", and the product specification table, the site-wide badge, the page title and the footer all say "99%+ Purity" and give a 99 percent minimum purity figure marked verified and HPLC confirmed. The vial label in the certificate photograph gives 99 percent purity. Not one of them is scoped to a lot. 4. The homepage claims a pharmaceutical manufacturing grade of quality, in a sentence that continues verbatim "with third-party lab verification for serious research applications." The COA page also asserts "GMP Compliant Facility" and the homepage "US-sourced from GMP-compliant manufacturers", with no certificate, registration number or auditor named. 5. On molecular identity the visible page and the vial agree, and only a hidden marketing payload disagrees with both. The specification table a reader is shown gives "Molecular Weight 4,731.28 g/mol" and "Molecular Formula C221H342N46O68". The vial label photographed on the vendor's own certificate reads "M.W.: 4731 g/mol" and "Formula: C22H342N46O68", so the two agree on the weight and differ only in that the vial label as printed appears to drop a digit from the carbon count. Separately, and not visitor-facing: the page source carries a stale stored product description handed to the Omnisend marketing integration, and that payload gives "Molecular Formula C225H343N59O68", "Molecular Weight 4,924.58 g/mol" and "Purity 99.2% by HPLC". Not one of those three strings renders in the page a visitor reads. Recorded because the page serves them to a third party, not as a contradiction in anything the storefront shows. 6. Two contradictory age gates render on the same page: one modal ends "You must be 18+ and a qualified researcher to continue", the other reads "By entering, you confirm you are 21+ and all products are for research only." 7. Payment display conflicts with itself. The footer displays eight brand marks, Visa, Mastercard, Discover, Apple Pay, Google Pay, Afterpay, Affirm and Klarna, while the retatrutide product page's own badge says "We Accept: ACH, Zelle". I did not transact, so which set actually functions at checkout is UNVERIFIED. 8. Ratings are uniform and the counts disagree. Every one of the 26 product tiles displays exactly 4.8 stars. On the retatrutide page the header reads "4.8 (373 reviews)" while the reviews tab on the same page reads "Reviews (195)" and the shop tile reads "4.8 (195)". 9. Urgency and outcome framing: the product page shows "Only left in stock - order soon" with the number missing, and files the compound under a four-item category list giving GLP, Metabolic, a body-composition outcome term, and Triple Agonist Research. The research copy states the compound demonstrated unprecedented performance in metabolic research endpoints, the vendor's own noun there being a drug-effectiveness term, and describes receptor activity that "enhances insulin secretion, slows gastric emptying, and acts on hypothalamic appetite centers" and "increases energy expenditure, promotes hepatic fat oxidation, and stimulates thermogenesis", quoted as the vendor's own copy.
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Some supplier links here are referral links, marked where they appear, which pay Terminus Research when a reader buys. The same terms are open to every supplier in the ledger, apart from the one exception the referral policy page names, participation changes no score, rank, caution, or coverage decision, and a link is not an endorsement.