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Vendor verification record

Peptide Partners

peptide.partnersChecked · next check 5 Jan 2027

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.

What we checked on Peptide Partners

Five checks against outside records. Open any finding to see the source.

  1. Regulatory recordFDA warning letter, August 2026
    Action on record

    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”.

    Checked 7 Oct 2026

  2. Operating historyOnline since March 2025
    Confirmed

    peptide.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

  3. Business registrationPirsek Technologies LLC, Wyoming, active
    Confirmed

    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.

    Checked 7 Oct 2026

  4. Testing transparency424 public batch certificate records naming the lab
    Confirmed

    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.

    Checked 7 Oct 2026

  5. Other sites using the name2 live shops use the name
    Worth knowing

    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.

    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.

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)

Peptide Partners timeline

  1. 28 Jan 2013

    peptidepartners.com registered

  2. 29 Mar 2024

    peptidepartners.co registered

  3. 29 Dec 2024

    peptidepartner.com registered

  4. 18 Mar 2025

    peptide.partners registered (Amazon Registrar)

  5. 22 Mar 2025

    peptide-partners.com registered

  6. 24 Mar 2025

    First Wayback capture: redirect to a Shopify store

  7. 13 Apr 2025

    peptidepartners.us registered

  8. 13 May 2025

    First archived capture of the open shop

  9. Jul 2025

    Earliest dated record in its certificate library

  10. 1 Dec 2025

    peptidespartners.com registered

  11. 3 Mar 2026

    peptidepartners.org and peptidepartners.net registered

  12. 4 Mar 2026

    peptidepartner.co registered

  13. 20 Mar 2026

    peptidepartner.org registered

  14. 26 Apr 2026

    peptidepartners.store registered

  15. 7 May 2026

    peptidepartners.io registered

  16. 19 May 2026

    peptide-partner.com registered

  17. Jul 2026

    FDA reviews peptide.partners

  18. 16 Jul 2026

    peptidepartner.io registered; a wholesale supplier trading as Peptide Partner

  19. 23 Jul 2026

    peptidepartners.shop registered; it runs a shop under the Peptide Partners name

  20. 24 Aug 2026

    FDA warning letter 735063 issued

  21. 27 Aug 2026

    peptidespartners.us registered

  22. 1 Sept 2026

    FDA posts warning letter 735063

  23. 10 Sept 2026

    peptidepartner.us registered; it runs a shop titled Peptide Partners

  24. 6 Oct 2026

    peptidepartners.is registered

  25. 7 Oct 2026

    Record checked: products named in the FDA letter still listed

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

  • 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

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.

What we couldn't verify about Peptide Partners

  1. 01How the seller responded to the FDA, and whether the FDA has closed the matter.
  2. 02Whether the product descriptions the FDA quoted have been changed; the product pages were still live on 7 October 2026.
  3. 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.
  4. 04Whether any certificate in its library has been confirmed by the laboratory that issued it.
  5. 05Whether peptidepartners.shop, which copies its wording and address, or peptidepartner.us is connected to it; and which payment methods checkout offers.