---
title: "Retatrutide CoA UK | every lot | Sable Peptides"
description: "Retatrutide with a CoA in the UK: HPLC purity and mass spectrometry identity for every lot, printed lot number on each vial, emailed within 2 hours. Research us"
canonical: https://www.sablepeptides.co.uk/certificate-of-analysis/retatrutide
dateModified: 2026-10-16
publisher: Sable Peptides Limited (UK company 17488610)
note: Research use only. Not for human or veterinary use.
---

[Certificates of analysis](/certificate-of-analysis)

# Retatrutide certificate of analysis (CoA)

## What the certificate covers

-   Lot number, matching the number printed on the vial.
-   Purity by HPLC, with the chromatogram. [How to read an HPLC chromatogram](/learn/how-to-read-an-hplc-chromatogram).
-   Identity by mass spectrometry against the expected mass (CAS 2381089-83-2).
-   Test date and testing laboratory. [Every CoA field explained](/learn/coa-fields).

[Request the Retatrutide CoA](/coa-request). Emailed within 2 hours. No figures are invented on this page; the certificate itself is the source.

## Retatrutide sizes covered

| Vial | Price | Per mg | Stock | Lowest other UK listing (16 Oct 2026) |
| --- | --- | --- | --- | --- |
| Retatrutide 5 mg | £16.93 | £3.39 | In stock | £20.95 (2 compared) |
| Retatrutide 10 mg | £24.99 | £2.50 | In stock | £51.99 (2 compared) |
| Retatrutide 15 mg | £37.99 | £2.53 | In stock | £85.00 (1 compared) |
| Retatrutide 20 mg | £48.99 | £2.45 | In stock | £93.99 (2 compared) |
| Retatrutide 30 mg | £66.99 | £2.23 | In stock | £85.00 (4 compared) |
| Retatrutide 40 mg | £88.99 | £2.22 | In stock | No same-size comparison |
| Retatrutide 50 mg | £108.99 | £2.18 | In stock | No same-size comparison |
| Retatrutide 60 mg | £128.99 | £2.15 | In stock | No same-size comparison |

## Delivery, CoA and payment

-   Packed the same day in Birmingham; next-day UK delivery is the stated service.
-   UK mainland tracked delivery £5.90, free when goods reach £50. Highlands and islands (AB, IV, KW, HS, ZE, PH) £9.50, free when goods reach £50. UK addresses only.
-   A Certificate of Analysis (HPLC purity and mass spectrometry identity) for every lot, emailed within 2 hours of a request. Each vial carries a printed lot number.
-   Lowest UK price guaranteed for the same compound and mg size, checked daily against established UK suppliers.
-   Pay by Bank via Wallid. No returns, except faulty or damaged items, which are refunded or replaced.
-   Research use only. Not a medicine. Not for human or veterinary use.

## Questions

Does Retatrutide from Sable Peptides come with a CoA?

Yes. A Certificate of Analysis is available for every Retatrutide lot and is emailed within 2 hours of a request at https://www.sablepeptides.co.uk/coa-request.

What does a Retatrutide certificate of analysis show?

The lot number, the HPLC purity result with its chromatogram, the mass spectrometry identity check against the expected mass, the test date and the testing laboratory.

How do I match a CoA to my Retatrutide vial?

Read the lot number printed on the vial label and check that the certificate carries the same lot number. Include it, or your order number, when you request the CoA.

Can I see the certificate before I order?

Yes. Email hello@sablepeptides.co.uk or use https://www.sablepeptides.co.uk/coa-request and name the compound and size; the current lot's certificate is sent within 2 hours.

Is Retatrutide for human use?

No. It is sold for laboratory research use only. It is not a medicine and not for human or veterinary use.

## Related

-   [Retatrutide UK: all sizes](/retatrutide-uk)
-   [Buy Retatrutide in the UK](/buy/retatrutide)
-   [Retatrutide UK price check](/uk-price-check/retatrutide)
-   [Retatrutide price per mg](/price-per-mg/retatrutide)
-   [Cheapest Retatrutide 5 mg UK](/questions/retatrutide/cheapest-retatrutide-5-mg-uk)
-   [Best Retatrutide supplier UK](/best-uk-supplier/retatrutide)
-   [What Retatrutide is](/learn/retatrutide)
-   [Retatrutide compared with other compounds](/versus/retatrutide)
-   [UK delivery](/shipping)
-   [Request a CoA](/coa-request)

Every lot of Retatrutide sold by Sable Peptides has a Certificate of Analysis covering HPLC purity and mass spectrometry identity. Each vial carries a printed lot number that matches its certificate. Request the CoA with your lot or order number and it is emailed within 2 hours. Certificates are not published as public files. Research use only.

Updated 2026-10-16