Vici Peptides
vicipeptides.com
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Vici Peptides' downloadable Certificate of Analysis PDFs for all three retatrutide sizes, tested by a lab called SteriGenix, print the molecular formula C221H343N51O64, byte-identical across three separately generated documents, wrong for retatrutide and wrong against SteriGenix's own public verification database, which records the correct formula, C221H342N46O68, for those same batch numbers; an older certificate from a second lab, BioRegen, gets the formula right but gives a molecular weight, 4845.444 g/mol, matching neither retatrutide nor the product page's own Molecular Profile widget. The Contact page states flatly that "every batch is tested by an independent ISO 17025 accredited laboratory", but BioRegen's site makes no accreditation claim and SteriGenix's own homepage only calls itself "ISO 17025-aligned", never accredited. A reader who downloaded the certificate for their own lot could say whether the PDF still prints a formula the lab's own verification database contradicts.
What the record holds
SAME DAY, CUTOFF STATED
“same-day dispatch for orders placed before 3:00 PM ET, free shipping over $200, 3 to 5 business days standard transit once shipped”
United States only, stated plainly in the Terms as quoted in the dated entry, with the dispatch cutoff stated once, so the timed class applies. The transit figure is a window that starts once shipped, and four of the 23 sitemap product URLs permanently redirect to the login page, a catalog condition recorded beside the shipping terms rather than a timing ambiguity.
Read from this supplier's own pages on 2026-08-26. 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 RT, SKU RT10, product titled "RT" at /product/rt/
Price as recorded $85.00 for one 10mg vial (regular price $106.00); the same page also lists $145.00 for one 20mg vial and $195.00 for one 30mg vial. No multi-vial kit is sold
Read on 2026-08-26. One reading on one day, and prices are not tracked over time here.
This supplier was not part of the Trustpilot reading of 2026-08-25, which covered 59 of the 126 suppliers on file. That is a fact about this publication's coverage, stated rather than left to be read either way.
4 claims from this publication's own dossier on this supplier were read again against the live site on 2026-08-26: 1 held, 3 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
4 observations on file, recorded 2026-08-26. Newest first, appended and never rewritten.
Vici Peptides publishes its Certificate of Analysis history inline on each product page rather than on a separate certificates index. The RT (retatrutide) page carries four lot cards for its three sizes. The oldest, lot RT10-260101, labeled 10mg, actual 13.6mg, purity 99.84 percent, tested 02/03/26, is issued by a lab called BioRegen (contact@bioregen.com), method "Qualitative and Quantitative chemical analysis by Ultra High Performance Liquid Chromatography with Mass Spectrometry", reporting the correct molecular formula for retatrutide, C221H342N46O68, but a molecular weight of 4845.444 g/mol, a figure that does not match the compound (retatrutide's accepted mass is about 4731 g/mol) and does not match the product page's own Molecular Profile widget, which states 4,731 g/mol two sections below the same certificate link. Three newer lots, tested 06/12/26 for the 10mg, 20mg and 30mg sizes (RT10-2601-01, RT20-2601-01, RT30-2601-01, purity 99.54, 99.96 and 99.55 percent, net content 10.93, 20.98 and 32.01mg against label), are issued by a second lab, SteriGenix, testing five additional lines beyond purity: potency, identity by LC-MS, microbial sterility, endotoxin, and a four-metal heavy-metal screen (lead, cadmium, arsenic, mercury, all negative). I downloaded all four PDFs directly with curl rather than opening them in a browser and read their text and word-position data. All three SteriGenix PDFs print, in each one's Sample Information table, a molecular formula of C221H343N51O64, verified at the exact word position on the page (not a table-column misread) and identical across all three files, which is neither retatrutide's accepted formula nor the formula BioRegen's own certificate reports for the same compound two months earlier. The Mol. Weight field on the SteriGenix PDFs, 4731.39 g/mol, is correct and matches the product page. So across the two labs the page cites for its flagship compound, one certificate carries the right formula and the wrong weight, and the other three carry the right weight and a formula that is wrong in three different places (a different hydrogen count, nitrogen count, and oxygen count from the true structure) in a string that is copied verbatim across all three lot sizes.
On the two labs, exercised directly rather than described. bioregen.com resolves to a live independent testing lab in the supplement, nootropic, and research-chemical space, offering peptide testing among its intake-form options, USA-based, UPLC and mass-spectrometry equipment, phone (979) 402-4797; no ISO 17025, A2LA, or other accreditation claim appears anywhere on its site. Its public /report lookup takes a coa_number and a secret_key as plain GET parameters; querying it with the values printed on the BioRegen certificate, coa_number=12070 and secret_key=VICIPEP01, returned a matched record offering "Download 12070_Vici_Peptides_Retatrutide_10mg Report", while a control query with an invented number and key returned "No matching post found. Please check the COA number and Secret Key," so the lookup is a genuine, working check rather than a page that always confirms. sterigenixanalytical.com resolves to a live, dedicated contract lab in Jacksonville, FL, describing itself in its own schema markup as an "Independent contract analytical laboratory for research peptides and small-molecule compounds," naming real instrumentation (Agilent 1260 Infinity II DAD, Waters Xevo TQ-S with Acquity UPLC, a Charles River Endosafe Kinetic-QCL endotoxin reader, a Metrohm 915 KF Ti-Touch Karl Fischer titrator). On standards, its homepage invokes ISO 17025 by name: a quality-section card titled "ISO 17025-aligned" over subtext describing a quality management system "aligned to ISO/IEC 17025", and a footnote stating it "operates under an ISO 17025-aligned quality system for research-use-only testing" while adding in the same breath that it is not a cGMP-registered facility; its FAQ repeats the alignment wording, and USP, EP and ICH pharmacopeia method references sit alongside. What its site never does, across the sixteen pages fetched, is use the word accredited or name any accrediting body, so the claim is self-declared alignment with the standard, not accreditation to it. Its verify tool queries a public Supabase table, coas_public, from the browser; I queried that same public endpoint directly for all three retatrutide batch numbers and it returned full matching records for RT10-2601-01, RT20-2601-01 and RT30-2601-01 (report numbers RPT-2026-242829, RPT-2026-223021, RPT-2026-061225), each with an identity table whose Mol. Formula field reads C221H342N46O68, the chemically correct formula, for all three; a control query for an invented batch returned no matching records. So SteriGenix's own database of record, which is what its public verification tool checks against, states the correct formula for all three retatrutide lots even though the PDF a buyer downloads from Vici Peptides' own server states a different, incorrect one. BioRegen's own site never mentions ISO 17025, A2LA or accreditation on any of its seven reachable pages; SteriGenix's claims alignment with ISO 17025 but nowhere accreditation to it.
Prices and catalog read from the live site on 2026-08-26. Retatrutide is listed under the code "RT" at /product/rt/, sold as a single vial in three sizes: 10mg for $85.00 (regular $106.00, SKU RT10), 20mg for $145.00 (regular $177.00, SKU RT20), and 30mg for $195.00 (regular $238.00, SKU RT30); the live WooCommerce variation data attaches a low-stock urgency message to all three simultaneously, giving stock counts of 39, 33 and 15 units for the 10mg, 20mg and 30mg sizes respectively and pairing each with an urgency phrase this dossier does not reprint. No multi-vial kit is sold; every size is one vial at the stated price. Also recorded: TZ (tirzepatide) 10/20/30mg at $59/$99/$139 (regular $74/$124/$170), SM (semaglutide) 10/20mg at $49/$95 with no listed sale price, NAD+ 100/500/1000mg at $35/$89/$155 (regular $45/$111/$189), and Ipamorelin 10mg at $59 with no sale price. The product sitemap lists 23 product URLs across 8 named categories (sexual-health-research, metabolic-research, growth-secretagogue-research, tissue-repair-research, cellular-longevity-research, dermal-research, lab-supplies, neuro-cognitive-research); of those 23, four, /product/bpc-157/, /product/tb-500/, /product/bpc-157-tb-500/ and /product/ghk-cu/, return a permanent HTTP 301 (header x-redirect-by: WordPress) to /login/ on every fetch I made today rather than loading a product page, so roughly one catalog item in six that the sitemap advertises is presently a dead end for an anonymous shopper. Shipping: the Terms state plainly "Vici Peptides currently ships within the United States only", same-day dispatch for orders placed before 3:00 PM ET, free shipping over $200, 3 to 5 business days standard transit once shipped. Payment: the Terms name the accepted methods directly, "major credit cards, Venmo, Zelle, and cryptocurrency", through PCI-compliant processors that do not store full card credentials; checkout itself was not reached. Returns: opened vials are generally excluded from return, alongside a distinct "Purity Money-Back Guarantee" that pays out if the batch COA (or an independent third-party test the buyer supplies) shows purity materially below the stated specification. Entity and contact: the support address is presented as an image/obfuscated mail-protection span on every page I fetched rather than as plain text, so I could not read it directly; a phone number, +1 (305) 404-3184, appears in the footer and the FAQ; the Terms set governing law as the State of Delaware with mandatory AAA consumer arbitration seated there and a liability cap of the greater of amount paid or $100; no street address and no company legal-entity suffix (LLC, Inc, or equivalent) appear on the Contact, Terms, or Privacy pages I read.
CAUTIONCautions noted, all fetched or queried directly today. First, and most concrete: the SteriGenix-issued Certificate of Analysis PDFs for all three retatrutide sizes, the documents a buyer actually downloads from Vici Peptides' own server, print a molecular formula, C221H343N51O64, that is wrong both for retatrutide and for SteriGenix's own database record of the identical batch and report number, which reads C221H342N46O68 (verified directly above by querying SteriGenix's public verification database, not merely by reading the PDF). The error is not a one-off typo; it is byte-identical across all three separately generated PDFs (10mg, 20mg, 30mg), meaning whatever produced the downloadable document diverges from the record the lab's own verification tool checks against. Second, the vendor's own Contact page states as fact that "every batch is tested by an independent ISO 17025 accredited laboratory that specializes in peptide analysis"; neither named lab's own site supports that accreditation. BioRegen's makes no ISO 17025, A2LA, or other accreditation or standards claim on any of its seven reachable pages, and SteriGenix's claims only self-declared alignment, "ISO 17025-aligned" on its homepage quality section and again in its FAQ, never uses the word accredited, names no accrediting body across the sixteen pages fetched, and states in the same passages that it is not a cGMP-registered facility, so the vendor's flat accreditation sentence rests on a standard one lab never mentions and the other only claims alignment with. Third, the same Contact page describes the testing regimen as a "5-point protocol: Identification, Purity, Potency, Sterility, Heavy Metals, and Endotoxins" (six items under a five-point label) and, two questions later on the identical page, calls it "all six tests in our protocol", so the page cannot settle on its own count. Fourth, the retatrutide product page's Molecular Profile widget states a molecular weight of 4,731 g/mol, matching the three SteriGenix certificates, while the older BioRegen certificate linked two sections below on the same page states 4845.444 g/mol for the same compound, a mismatch a buyer can find without leaving the page. Fifth, four of the 23 product URLs the site's own sitemap advertises, covering BPC-157, TB-500, the BPC-157/TB-500 blend, and GHK-Cu, permanently redirect to the account login page instead of loading (HTTP 301, confirmed on repeated fetches and distinct from a temporary block, since other product URLs fetched in the same sequence loaded normally). Sixth, the lot-card widget on the retatrutide page prefixes the word "Latest" to the purity figure on two of its four cards (the Feb BioRegen lot and the June 10mg SteriGenix lot) but not on the 20mg or 30mg cards beside them, an inconsistent label within a single widget rather than a reliable marker of which lot is current. Seventh, net content against label is uneven in a way nothing on the page explains: the BioRegen lot measures 13.6mg against a 10mg label, 36 percent over, while the three SteriGenix lots run closer to label at roughly 9, 5, and 7 percent over.
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