No rating, no ranking. Every line below is a dated fact from an outside source. We don’t test products and nobody pays to change a record.
- Online since
- Mar 2025
- Domain registration and web archive
- Company
- Pirsek Technologies LLC (WY)
- State business registries
- Regulatory record
- FDA warning letter
- FDA warning letters and enforcement data
- COAs
- Public library
- Lab reports on the seller's public pages
Summary
Peptide Partners (peptide.partners) was issued an FDA warning letter on 24 August 2026 for selling unapproved new drugs, among them semaglutide, tirzepatide and retatrutide. Its terms say it is operated by Pirsek Technologies LLC, an active Wyoming company, and it gives a Sarasota, Florida mailing address. Online since March 2025, it publishes 424 batch certificate records naming four laboratories.
The checks
What we checked on Peptide Partners
Five checks against outside records. Open any finding to see the source.
Regulatory recordFDA warning letter, August 2026Action on record
Action on recordWarning letter 735063 was issued on 24 August 2026, and posted on 1 September 2026, to Peptide Partners LLC at 8350 Bee Ridge Rd #379, Sarasota, Florida, by email to support@peptide.partners; its header also names Pirsek Technologies at a Sarasota address. It cites https://peptide.partners/ and six of its product pages, and asked for a written response within 15 business days. On 7 October 2026 the pages for all seven products named in the letter were still live. We found no recall naming the seller, Pirsek or the domain in openFDA enforcement records, and no other warning letter in the FDA index for “Peptide Partners”, “peptidepartners” or “Pirsek”.
Checked 7 Oct 2026
Operating historyOnline since March 2025Confirmed
Confirmedpeptide.partners was registered on 18 March 2025 through Amazon Registrar. The Wayback Machine first captured it on 24 March 2025, redirecting to a Shopify store, and in April 2025 behind a password page; the first archived capture of the open shop, “Peptide Partners: Quality Research Peptides”, is from 13 May 2025. It has been captured most months since, most recently on 3 October 2026.
Checked 7 Oct 2026
Business registrationPirsek Technologies LLC, Wyoming, activeConfirmed
ConfirmedThe terms and privacy policy state that Peptide Partners is “operated by Pirsek Technologies LLC”, that the terms are governed by Wyoming law, and give 75 E 3rd St, Ste 7, Sheridan, Wyoming as a contact address. Wyoming's registry holds an active limited liability company, Pirsek Technologies LLC (2024-001480967), at that same address, through a commercial registered agent. The contact page gives a separate business mailing address at 8350 Bee Ridge Rd #379, Sarasota, Florida, the address the FDA letter used for Peptide Partners LLC. We could not search Florida's registry, which blocked automated access.
- Pirsek Technologies LLC — Wyoming registry via OpenCorporates
- Peptide Partners terms and conditions
- Peptide Partners privacy policy
Checked 7 Oct 2026
Testing transparency424 public batch certificate records naming the labConfirmed
ConfirmedIts certifications page lists 424 records — purity, endotoxin, heavy-metal and sterility — each with a batch ID, the laboratory and a certificate file that opens without a login, dated from July 2025 to October 2026. The laboratories listed are TrustPointe Analytics, Kovera Labs, Chromate and BioRegen. We opened certificates from all four: each names Peptide Partners as the client and gives the batch shown in the table. We did not confirm any certificate with the laboratory that issued it.
Checked 7 Oct 2026
Other sites using the name2 live shops use the nameWorth knowing
Worth knowingpeptidepartners.shop, registered 23 July 2026, runs a shop under the Peptide Partners name that copies this site's wording and its Sarasota mailing address but gives a different phone number and a Gmail address. peptidepartner.us, registered 10 September 2026, runs a separate shop titled “Peptide Partners” that gives only “United States” as its location. peptidepartner.io, registered 16 July 2026, is a wholesale and white-label supplier trading as Peptide Partner that takes partners by application. We found no link from peptide.partners to any of them, and could not establish whether any is connected to it.
Checked 7 Oct 2026
From peptide.partners, checked 7 Oct 2026
Compounds Peptide Partners lists
28 compounds on its public catalogue that we have research pages for. Each link opens what the published studies say — not a dose, and not a recommendation to buy.
On the seller's own site
What Peptide Partners tells a buyer
8 of 9 basics are stated on its public pages. Anything behind a login counts as not public.
- StatedCompany namePirsek Technologies LLC
- StatedPhysical addressSarasota, FL (mailing); Sheridan, WY
- StatedPhone(941) 231-0291
- StatedEmailsupport@peptide.partners
- StatedResearch-use labelling“Research Use Only”; FDA found it inadequate
- StatedPublic pricesShop is public
- StatedPublic COAs424 batch records
- StatedTesting lab namedTrustPointe; Kovera; Chromate; BioRegen
- Not statedPayment methodsShown only at checkout (account required)
Timeline
Peptide Partners timeline
28 Jan 2013
peptidepartners.com registered
29 Mar 2024
peptidepartners.co registered
29 Dec 2024
peptidepartner.com registered
18 Mar 2025
peptide.partners registered (Amazon Registrar)
22 Mar 2025
peptide-partners.com registered
24 Mar 2025
First Wayback capture: redirect to a Shopify store
13 Apr 2025
peptidepartners.us registered
13 May 2025
First archived capture of the open shop
Jul 2025
Earliest dated record in its certificate library
1 Dec 2025
peptidespartners.com registered
3 Mar 2026
peptidepartners.org and peptidepartners.net registered
4 Mar 2026
peptidepartner.co registered
20 Mar 2026
peptidepartner.org registered
26 Apr 2026
peptidepartners.store registered
7 May 2026
peptidepartners.io registered
19 May 2026
peptide-partner.com registered
Jul 2026
FDA reviews peptide.partners
16 Jul 2026
peptidepartner.io registered; a wholesale supplier trading as Peptide Partner
23 Jul 2026
peptidepartners.shop registered; it runs a shop under the Peptide Partners name
24 Aug 2026
FDA warning letter 735063 issued
27 Aug 2026
peptidespartners.us registered
1 Sept 2026
FDA posts warning letter 735063
10 Sept 2026
peptidepartner.us registered; it runs a shop titled Peptide Partners
6 Oct 2026
peptidepartners.is registered
7 Oct 2026
Record checked: products named in the FDA letter still listed
Before you type the address
Fake and lookalike Peptide Partners sites
2 other sites run under the Peptide Partners name. We could not establish whether they are connected to peptide.partners. Check the address bar.
peptide.partners
The site this record covers
peptidepartners.shop
Runs its own shop· registered 23 Jul 2026
peptidepartner.us
Runs its own shop· registered 10 Sept 2026
peptidepartner.io
Wholesale and white-label supplier (Peptide Partner); partners apply· registered 16 Jul 2026
peptide-partner.com
Login-only affiliate order portal· registered 19 May 2026
peptidepartners.org
Oral wellness products for clinics; checkout on another site· registered 3 Mar 2026
peptidepartners.us
Articles on peptide stacks; no shop· registered 13 Apr 2025
peptidepartners.io
Contact form only; no shop· registered 7 May 2026
peptidepartner.org
Subscription peptide-tracking app; no shop· registered 20 Mar 2026
peptidepartner.co
Redirects to theclinicengine.com· registered 4 Mar 2026
peptidepartner.com
Placeholder page· registered 29 Dec 2024
peptide-partners.com
Placeholder page· registered 22 Mar 2025
peptidespartners.com
Placeholder page· registered 1 Dec 2025
peptidespartners.us
Parked· registered 27 Aug 2026
peptidepartners.co
Parked· registered 29 Mar 2024
peptidepartners.net
Parked· registered 3 Mar 2026
peptidepartners.com
No site responds· registered 28 Jan 2013
peptidepartners.is
No site responds· registered 6 Oct 2026
peptidepartners.store
No site responds (on registry hold)· registered 26 Apr 2026
| Domain | Registered | What it does |
|---|---|---|
| peptide.partners | — | The site this record covers |
| peptidepartners.shop | 23 Jul 2026 | Runs its own shop |
| peptidepartner.us | 10 Sept 2026 | Runs its own shop |
| peptidepartner.io | 16 Jul 2026 | Wholesale and white-label supplier (Peptide Partner); partners apply |
| peptide-partner.com | 19 May 2026 | Login-only affiliate order portal |
| peptidepartners.org | 3 Mar 2026 | Oral wellness products for clinics; checkout on another site |
| peptidepartners.us | 13 Apr 2025 | Articles on peptide stacks; no shop |
| peptidepartners.io | 7 May 2026 | Contact form only; no shop |
| peptidepartner.org | 20 Mar 2026 | Subscription peptide-tracking app; no shop |
| peptidepartner.co | 4 Mar 2026 | Redirects to theclinicengine.com |
| peptidepartner.com | 29 Dec 2024 | Placeholder page |
| peptide-partners.com | 22 Mar 2025 | Placeholder page |
| peptidespartners.com | 1 Dec 2025 | Placeholder page |
| peptidespartners.us | 27 Aug 2026 | Parked |
| peptidepartners.co | 29 Mar 2024 | Parked |
| peptidepartners.net | 3 Mar 2026 | Parked |
| peptidepartners.com | 28 Jan 2013 | No site responds |
| peptidepartners.is | 6 Oct 2026 | No site responds |
| peptidepartners.store | 26 Apr 2026 | No site responds (on registry hold) |
Common questions
Peptide Partners: what people ask
Answered from the record above, not from the seller.
Is Peptide Partners legit?
We don't rate sellers, so this isn't a yes or no. What the records show, as of Oct 2026: Operating history: online since March 2025. Business registration: Pirsek Technologies LLC, Wyoming, active. Regulatory record: FDA warning letter, August 2026. Testing transparency: 424 public batch certificate records naming the lab. Other sites using the name: 2 live shops use the name. Each finding links to its source above.
Who owns Peptide Partners?
The terms and privacy policy state that Peptide Partners is “operated by Pirsek Technologies LLC”, that the terms are governed by Wyoming law, and give 75 E 3rd St, Ste 7, Sheridan, Wyoming as a contact address. Wyoming's registry holds an active limited liability company, Pirsek Technologies LLC (2024-001480967), at that same address, through a commercial registered agent. The contact page gives a separate business mailing address at 8350 Bee Ridge Rd #379, Sarasota, Florida, the address the FDA letter used for Peptide Partners LLC. We could not search Florida's registry, which blocked automated access.
Where is Peptide Partners based?
Peptide Partners gives its address as Sarasota, FL (mailing); Sheridan, WY on its own site. Pirsek Technologies LLC, Wyoming, active.
Has the FDA taken action against Peptide Partners?
Warning letter 735063 was issued on 24 August 2026, and posted on 1 September 2026, to Peptide Partners LLC at 8350 Bee Ridge Rd #379, Sarasota, Florida, by email to support@peptide.partners; its header also names Pirsek Technologies at a Sarasota address. It cites https://peptide.partners/ and six of its product pages, and asked for a written response within 15 business days. On 7 October 2026 the pages for all seven products named in the letter were still live. We found no recall naming the seller, Pirsek or the domain in openFDA enforcement records, and no other warning letter in the FDA index for “Peptide Partners”, “peptidepartners” or “Pirsek”.
Does Peptide Partners publish COAs (lab test results)?
Its certifications page lists 424 records — purity, endotoxin, heavy-metal and sterility — each with a batch ID, the laboratory and a certificate file that opens without a login, dated from July 2025 to October 2026. The laboratories listed are TrustPointe Analytics, Kovera Labs, Chromate and BioRegen. We opened certificates from all four: each names Peptide Partners as the client and gives the batch shown in the table. We did not confirm any certificate with the laboratory that issued it.
Are there fake Peptide Partners websites?
peptidepartners.shop, registered 23 July 2026, runs a shop under the Peptide Partners name that copies this site's wording and its Sarasota mailing address but gives a different phone number and a Gmail address. peptidepartner.us, registered 10 September 2026, runs a separate shop titled “Peptide Partners” that gives only “United States” as its location. peptidepartner.io, registered 16 July 2026, is a wholesale and white-label supplier trading as Peptide Partner that takes partners by application. We found no link from peptide.partners to any of them, and could not establish whether any is connected to it. The site this record covers is peptide.partners.
Is there a Peptide Partners coupon code?
We don't publish coupon codes for Peptide Partners. Codes posted elsewhere aren't checked by us.
Gaps
What we couldn't verify about Peptide Partners
- 01How the seller responded to the FDA, and whether the FDA has closed the matter.
- 02Whether the product descriptions the FDA quoted have been changed; the product pages were still live on 7 October 2026.
- 03How Peptide Partners LLC, the company the FDA letter names, relates to Pirsek Technologies LLC, and whether either is registered in Florida, whose registry blocked our search.
- 04Whether any certificate in its library has been confirmed by the laboratory that issued it.
- 05Whether peptidepartners.shop, which copies its wording and address, or peptidepartner.us is connected to it; and which payment methods checkout offers.
