Improved Peptides
improvedpeptides.com
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Improved Peptides' About page names Freedom Diagnostics Testing as the current laboratory partner in the singular, but three of the nine certificates marked Verified in the site's own COA Library, covering Semaglutide and both Melanotan listings, carry a different laboratory's signature, Krause Analytical LLC, printed under Finnrick Analytics letterhead, and all three share one identical Batch/Lot string, PT-7f4b6deaffb3-1, across three chemically distinct compounds. The retatrutide certificate itself, confirmed live at Freedom Diagnostics' own public lookup, prints lot IP-RETA-2026-001 on its document face, a different string than the IP-GLP3R-2026-001 the site's own COA Library card and product-page FAQ cite for what they describe as the same batch. Thirteen of the catalog's twenty-two compounds carry no certificate at all, marked "In Verification" with only an emailed request as a path to one, while a checkout code comment dated August 6, 2026 confirms that the PayPal merchant account is shut down site-wide, leaving Zelle and cryptocurrency, both final once confirmed, as the only working payment rails. Has anyone who emailed for one of the thirteen missing certificates received an actual document back?
What the record holds
SAME DAY, CUTOFF STATED
“domestic orders ship free, with free 2-day shipping over $200, same-business-day dispatch before 3 PM CT”
Published on the dedicated shipping-information page: cutoff 3 PM CT; delivery to all 50 states including PO boxes and APO/FPO addresses; international program to 17 named countries at a flat $39.00, free over $499.00, $150.00 minimum order, 7 to 21 business day transit. Returns only for shipping damage, a wrong item, or a confirmed manufacturer defect, within 14 days with photographic evidence.
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.
$110.00
Compound retatrutide 10mg
Listed as GLP-3R, SKU GLP-3R-10MG, at /product/glp-3r-10mg/
Price as recorded $110.00 USD for a single 10mg vial, with stack pricing of $187.00 for 2 vials ($93.50 each), $264.00 for 3 vials ($88.00 each) and $495.00 for 6 vials ($82.50 each), each stack tier adding a free bacteriostatic water and the 6-vial tier adding a free insulated cooler
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.
5 claims from this publication's own dossier on this supplier were read again against the live site on 2026-08-26: 1 held, 4 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.
The COA Library at /coa-library/, fetched today, organises all twenty-two catalog compounds by name and marks each either Verified with a purity figure, a lot number, a test date and a named laboratory, or In Verification with a line directing a buyer to request a copy by email. Nine of the twenty-two are Verified: BPC-157 10mg at 99.18 percent, GHK-Cu 50mg at 99.82 percent, GLP-1S 10mg (Semaglutide) at greater than 99.9 percent, GLP-2T 10mg (Tirzepatide) at 99.73 percent, GLP-3R 10mg (Retatrutide) at 99.96 percent, MOTS-C 10mg at 99.02 percent, MT-1 10mg at 99.0 percent, MT-2 10mg at 99.7 percent, and TB-500 10mg at 99.09 percent, every figure by HPLC per the library's own column heading. Thirteen remain In Verification with no certificate: 5-Amino-1MQ, CJC-1295/IPA (No DAC), DSIP, Epithalon, GLOW, KLOW, KPV, NAD+, PT-141, Selank, Semax, Tesamorelin and Wolverine. I downloaded the retatrutide (GLP-3R) certificate linked from the library and from the product page's own View COA link, an image-format PDF with no text layer, and read it as a rendered page: Freedom Diagnostics letterhead, client Improved Peptides, accession 2604280038, search code Impr2604280038, lot IP-RETA-2026-001 printed on the document face, where the site's own COA Library card and the product page's FAQ both instead cite lot IP-GLP3R-2026-001 for what they call the same current batch, a mismatch between the site's summaries and the certificate they link, re-read from the rendered document during verification, received 4/28/2026, reported 4/29/2026, product GLP3R 10mg, appearance white lyophilized powder, identity confirmed, net content 10.67 mg, purity 99.96 percent by HPLC-UV, method stated on the document face as HPLC with UV detection coupled with mass spectrometry (LC-MS), chromatogram and mass-confirmation panels present, signed Alex Johnson, Principal Chemist. Seven of the nine Verified certificates carry the same Freedom Diagnostics letterhead and lot-prefix convention (IP-compound-2026-001), all dated received and reported the same two days, 4/28 and 4/29/2026. The remaining two Verified entries, GLP-1S (Semaglutide) and both Melanotan entries MT-1 and MT-2, share a different document entirely: a four-page PDF whose first page is headed Certificate of Analysis, Finnrick Analytics, Finnrick.com, but whose signature block at the foot of the same page reads Mark C. Krause, Laboratory Director, referencing Krause Analytical internal quality assurance criteria, and whose footer prints a Krause Analytical LLC copyright line and the address 8127 Mesa Drive Suite B-206, Austin, TX 78759. All three of these carry the identical Batch/Lot string PT-7f4b6deaffb3-1 and the identical Project number 145144 despite being three chemically distinct compounds (Semaglutide, Melanotan I and Melanotan II) with different CAS numbers and different Lab # values (203180, 203184 and a third not opened), so the Lot field on these three documents identifies a shared client submission rather than a compound-specific manufacturing batch. Pages two and three of that document are a chromatogram and an Openlynx mass-spectrum report tied to the same Lab # as page one, and page four is a generic methods summary citing USP/NF 621 for purity and potency, USP/NF 85 for endotoxins and USP/NF 233 for metals, though the analytical table on page one of the documents I opened reports only chromatographic purity, identity and net content, with no endotoxin or metals finding actually filled in.
The About page names the current laboratory partner directly: the current laboratory partner is stated to be Freedom Diagnostics Testing, which performs HPLC purity analysis and mass-spectrometry identity confirmation on every batch. freedomdiagnosticstesting.com resolves to a live laboratory site, previously verified in this survey, giving a Franklin, TN address and a public lookup at coas.freedomdiagnosticstesting.com. I queried that lookup for the retatrutide certificate: fetching coas.freedomdiagnosticstesting.com/Impr2604280038.pdf returned HTTP 200 and a file byte-identical in size to the copy Improved Peptides publishes, and a company-name query against the laboratory's public index at coa-list.nameless-credit-789e.workers.dev returned six accession codes for Improved Peptides, Impr2604280035, 037, 038, 040, 041 and 043, matching the sequential numbering on the six Freedom-Diagnostics-branded documents in the vendor's own library. This confirms the laboratory hosts a document matching the vendor's copy for at least the retatrutide certificate. The second laboratory, printed only in the signature block of the GLP-1S, MT-1 and MT-2 documents, is Krause Analytical LLC of Austin, Texas, and it does operate a laboratory site of its own at krauselabs.com, linked directly from finnrick.com's own labs page; the contact block there prints the same Mesa Drive suite address in Austin that the certificate footer carries, corroborating the certificate's stated address. The unaffiliated guess krauseanalytical.com is a different, parked domain, answering HTTP with a generic not-found page while its HTTPS endpoint fails the TLS handshake outright rather than returning a page. Krause Analytical is also listed by name as one of seven named partner testing laboratories on finnrick.com, an independent, crowdsourced peptide-testing and vendor-rating site unconnected to Improved Peptides, which records 6,155 published tests attributed to Krause Analytical dated between April 2025 and August 2026, alongside a smaller count, 216, attributed to Freedom Diagnostics. Finnrick's own vendor leaderboards for Retatrutide, Semaglutide and Melanotan II, checked today, list only Chinese-manufacturer-style vendor names and do not include Improved Peptides among them, so the Finnrick branding printed across the top of the GLP-1S, MT-1 and MT-2 certificates does not correspond to any Improved-Peptides-specific entry on Finnrick's own consumer-facing pages; the document reads as Krause Analytical's report template, which carries Finnrick's masthead, generated for a direct vendor submission rather than through Finnrick's own crowdsourced program.
Benchmark and catalog read from the retatrutide product page and the /shop/ catalog on 2026-08-26. Retatrutide, house-named GLP-3R, SKU GLP-3R-10MG, is priced at $110.00 for a single 10mg vial, with a published stack-pricing ladder applying to every research vial in a cart regardless of compound: 2 vials $187.00 ($93.50 per vial, a stated 15 percent saving plus a free bacteriostatic water), 3 vials $264.00 ($88.00 per vial, 20 percent plus free bacteriostatic water), and 6 vials $495.00 ($82.50 per vial, 25 percent plus free bacteriostatic water and a free insulated cooler). The full 24-item catalog, read from /shop/: Tesamorelin 5mg/10mg $150.00, GLP-3R (Retatrutide) 10mg $110.00, GLP-2T (Tirzepatide) 10mg $99.00, BPC-157 10mg $75.00, GLP-1S (Semaglutide) 5mg/10mg $92.00, TB-500 10mg $85.00, Wolverine (BPC-157 + TB-500) 20mg $129.00, CJC-1295/IPA (No DAC) 10mg/20mg $120.00, GLOW 70mg $135.00, MOTS-C 10mg $79.00, 5-Amino-1MQ 50mg $75.00, KLOW 80mg $169.00, GHK-Cu 50mg $45.00, KPV 10mg $69.00, Bacteriostatic Water 10mL $14.50, Selank 10mg $56.00, Semax 10mg $56.00, PT-141 10mg $65.00, Epithalon 10mg $65.00, NAD+ 500mg $89.00, MT-2 10mg $56.00, MT-1 10mg $56.00, DSIP 5mg $52.00, and an Insulated Transport Cooler at $24.99, each item selling as a single vial per listing rather than a multi-vial kit; only the stack-pricing ladder above changes the per-vial cost. Checkout gateways are named directly in the retatrutide page's own inline code, a comment block titled IPP Checkout: Payment Restructure ordering three billing-method rows: PayPal first (a payment_method_ppcp-gateway class, PayPal Commerce Platform), Crypto second (a payment_method_nowpayments_gateway class, the NOWPayments processor), and Zelle third; the terms of service separately states that payments made by Zelle or cryptocurrency are final once confirmed. A separate hosted card gateway does appear elsewhere in the same page's inline code, a payment_method_bankful_hosted_gateway class from the Bankful plugin, with style rules that hide the gateway's own branding on the checkout page and a dynamically labelled pay button, so card handling is not simply routed through PayPal's fields; and the checkout page's own script, fetched during verification, carries a maintainer comment dated 2026-08-06 stating the PayPal merchant account is shut down and that the PayPal, Venmo and card rails are hidden for every visitor, leaving Zelle and the NOWPayments crypto route as the operative rails, matching the shopper walk's independent reading of the same checkout. Shipping, read from the dedicated shipping-information page: domestic orders ship free, with free 2-day shipping over $200, same-business-day dispatch before 3 PM CT, and delivery to all 50 states including PO boxes and APO/FPO addresses; a stated international program serves Canada, the UK, Ireland, the Netherlands, Poland, the Czech Republic, Romania, Bulgaria, Hungary, Croatia, Slovakia, Slovenia, Estonia, Latvia, Lithuania, Portugal and Greece at a flat $39.00, free over $499.00, with a $150.00 minimum order and 7 to 21 business day transit. Returns are accepted only for shipping damage, a wrong item, or a confirmed manufacturer defect, filed within 14 days with photographic evidence; a claim citing dissatisfaction with what a buyer's own research turns up is explicitly listed as not eligible. Entity and contact: the operating company appears under three different renderings across pages fetched today: The Improved Company LLC in the site footer and the About page, Improved Company LLC (without The) as the contracting party named in the terms of service, and Improved Peptides LLC in the liability clause of the Research Use Only page and as the business-address line on the Contact page. The terms of service gives a full mailing address, 9905 S Pennsylvania Ave Ste A, Oklahoma City, OK 73159, and states Oklahoma as the governing-law jurisdiction; the About page adds that the company was founded in Oklahoma in 2026.
CAUTIONCautions noted. First, the About page names Freedom Diagnostics Testing as the current laboratory partner in the singular, with no mention of Krause Analytical anywhere on that page, the Testing Standards page or the FAQ, yet three of the nine Verified certificates in the site's own COA Library, for GLP-1S, MT-1 and MT-2, are signed by Krause Analytical rather than Freedom Diagnostics; a buyer reading only the About page's claim would not learn that a second laboratory's documents are live in the library the same page points to. Second, those three documents carry Finnrick Analytics branding at the masthead while being signed by Krause Analytical, and Finnrick's own site describes itself as a consumer-driven, crowdsourced testing and vendor-rating service; nothing on either improvedpeptides.com or the certificates themselves explains why a direct-to-vendor testing report carries the branding of a separate consumer testing platform, and Improved Peptides does not appear among the vendors Finnrick's own leaderboards track. Third, the Batch/Lot field on those same three certificates, PT-7f4b6deaffb3-1, is identical across three chemically distinct compounds, so it functions as a submission identifier rather than a compound-specific manufacturing lot, a distinction the certificates themselves do not flag and a buyer matching a vial's printed lot number against the COA Library could easily misread. Fourth, thirteen of the twenty-two catalog compounds, including every blend (GLOW, KLOW, Wolverine) and several single peptides in active sale (Semax, Selank, Tesamorelin, NAD+, KPV, DSIP, Epithalon, PT-141, 5-Amino-1MQ, CJC-1295/IPA), carry no certificate at all, marked In Verification with an emailed-request-only note, while the shop page's own meta title advertises the catalog's purity as 99 percent or higher by HPLC without qualifying that fewer than half the items are actually documented. Fifth, the company's own legal name is rendered three different ways across its footer, its terms of service and its Research-Use-Only and Contact pages, The Improved Company LLC, Improved Company LLC, and Improved Peptides LLC, with no explanation anywhere that these refer to one entity. Sixth, the retatrutide certificate's own printed lot, IP-RETA-2026-001, does not match the lot string the COA Library card and the product-page FAQ cite for the same batch, IP-GLP3R-2026-001, and nothing on either page flags the difference; a buyer matching a vial's printed lot against the site's summaries would find two different strings for one document.
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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.