About Peptaro
Peptaro supplies research peptides from stock held in the UK; the full UK peptides range is on our homepage, or start from the research peptides UK buying guide. We send batches to an independent laboratory, publish the certificate on the product page, and where the lab publishes a report number, give you that too so you can check the result on the lab's own website before you order. Where a batch has not been to a laboratory yet, its certificate is published and labelled supplier-reported.
Browse the catalogueSee our lab results
Janoshik reports published
22
Each one checkable on janoshik.com
Latest independent test
26 Oct 2026
Dated on every certificate
Same-day dispatch cut-off
3pm
Monday to Friday
Free UK delivery over
Royal Mail Tracked 24
Quality
Check the result yourself. Don't take our word for it.
Anyone can write "lab tested" on a website. What matters is whether you can trace the vial in your hand to a report you can check with the lab. This is how we make that possible.
- 01A batch number on every vialThe number printed on the label matches the certificate on the product page, so you know which report belongs to the vial in your hand.
- 02Tested by a named labWe send vials from the batch to Janoshik Analytical for RP-HPLC purity and a measured amount per vial. Nothing is tested in-house.
- 03Published as the lab issued itThe certificate goes on the product page unedited, with its Janoshik test number, so you can open the original on the lab's own website instead of trusting our copy.
- 04More of the range every restockWe are moving the full catalogue to independent Janoshik testing. Products without a Janoshik report yet show the certificate supplied with that batch.
Recent independent results
Janoshik Analytical
| Batch | Purity | Measured | Lab record |
|---|---|---|---|
| Ipamorelin 5mg UKPL-6540 · 21/09/2026 | 99.971 % | 5.39 mg of 5 mg | Verify Ipamorelin 5mg on janoshik.com |
| PT-141 10mg UKPL-5217 · 14/09/2026 | 99.939 % | 10.02 mg of 10 mg | Verify PT-141 10mg on janoshik.com |
| SS-31 10mg UKPL-8613 · 10/09/2026 | 99.846 % | 11.68 mg of 10 mg | Verify SS-31 10mg on janoshik.com |
| Kisspeptin-10 10mg UKPL-3784 · 21/09/2026 | 99.225 % | 10.63 mg of 10 mg | Verify Kisspeptin-10 10mg on janoshik.com |
Single-batch results, shown to the decimal place the lab reports. Each product page shows the certificate for the batch currently in stock.
Ordering
What happens after you order
Order by 3pm, sent today
Orders placed before 3pm on a working day leave the same day by Royal Mail Tracked 24, with tracking in your dispatch email.
free tracked UK delivery on every order
We ship within the UK only, so there are no customs checks or import charges on your parcel.
Problems fixed at our cost
Damaged, wrong or lost in transit? Tell us within 48 hours with your order number and we send a free replacement. No return needed.
A real reply in one working day
Every message is read and answered by our UK team, usually the same day.
Full details in our returns and replacements policy. Popular starting points: BPC-157, GHK-Cu and tesamorelin buying guides.
Our rules
What we won't do
- Research use only. Every compound is sold for in-vitro laboratory work.
- No dosing or usage advice, ever. We will not answer questions about using products on people or animals.
- Adults only. Buyers confirm they are 18 or over at checkout.
- Not licensed medicines. Nothing we sell is for human or veterinary use.
Registered UK company
Legal name
UK Peptide Lab
Incorporated
14 April 2026, England and Wales
Registered office
71-75 Shelton Street, Covent Garden, London WC2H 9JQ
help@ukpeptidelab.co.uk
The registered office takes official post only. Please do not send parcels or returns there.
FAQ
Learn More
- Lab Testing & Quality AssuranceHow batches are tested and documented
- Browse Research PeptidesFull product catalogue with pricing
- BPC-157 5mgOur most popular research peptide
- Ipamorelin 5mgSelective growth hormone secretagogue
- GHK-Cu 100mgCopper-binding tripeptide for ECM research
- Frequently Asked QuestionsOrdering, purity, storage and shipping
- Research BlogPeptide guides, comparisons and laboratory resources
Read the certificate before you buy.
Every product page shows the batch in stock and its lab report. Order by 3pm for same-day dispatch.