How we rate retatrutide suppliers

Every score on this site comes from the same formula, applied to facts we record from each vendor's site, Companies House and review platforms. The formula is below in full, and each review page shows the points a vendor earned for each criterion and why.

Step 1: who gets listed

We list every shop we find that sells retatrutide to UK customers, unless it:

• shows no prices, or takes orders only through WhatsApp, Telegram, email or a contact form;
• does not deliver to UK addresses;
• sells anabolic steroids or SARMs;
• shows signs of being a scam — a copied site, a lab report borrowed from someone else, or widespread reports of orders never arriving.

Step 2: an eight-point checklist, 100 points

Each check is pass or fail, and every shop — including our paid partner — goes through the same list.

Price level is not scored. The ratings table lets you sort by price and by price per milligram instead.

Notes we add, but do not score

Some facts matter to readers but are not part of the score. Where they apply, each review lists them under “Worth knowing”: pre-filled pens, dosing or injection guidance, needles or syringes supplied, weight-loss claims, no company details on the site, and review profiles removed by the platform.

Step 3: badges and order

• Excellent: 90 points or more.
• Good: 70 to 89 points.

Our paid partner, LeoLab, appears first and is labelled “Sponsored partner · Paid placement”. Its position is paid for; its score comes from the same checklist as every other shop. All other shops are ordered by score in the table, which you can also sort by price.

How we check

• We record prices, stock and policies from each vendor's own pages and note the date. Prices can change daily.
• We look up every company number on Companies House.
• We record lab reports as the vendor publishes them. Janoshik's verification site blocks automated checks, so we confirm reports by hand; each review says whether a report has been confirmed on the lab's site.
• We check review platforms on the same day.
• We do not buy products or test them ourselves, and we do not accept free samples.

In our current round (30 September 2026) we scanned 190 UK peptide shops, found more than 50 listing retatrutide and checked 70 by hand.

Checked and not listed

These shops were checked on 30 September 2026 and are not listed, for the reason shown. Shops change; if one of these has fixed the issue, email us and we will re-check.

Corrections

If you think a fact on this site is wrong, email contact@retaradar.co.uk with a link to the source. Vendors can ask for a re-check at any time; it is free and does not depend on any commercial relationship.