Peptide documents to ask for before you buy
Five documents separate a peptide seller you can check from one you have to trust. Here is what each one settles, what a good one looks like, and how to check it yourself before you pay.
Ask for a certificate of analysis for your lot that you can open on the lab's own website, an endotoxin result, written refund terms, written delivery terms, and a business name you can reach. Any seller worth buying from can show all five, or tell you when the missing ones are coming.
1. A certificate of analysis for the lot
What it settles: What was in one batch when a lab tested it.
- The lot or batch number matches the one on your vial.
- The lab is a real third party with its own website.
- It opens on the lab's own site through a verification link or code.
- It reports purity (HPLC), identity (mass spectrometry) and the measured amount.
2. An endotoxin or sterility result
What it settles: Whether the batch carries bacterial contamination markers.
- The result is given in EU per vial or EU per mg.
- It is for the same lot as the purity report.
- It is labelled as its own test, since it is separate from purity.
3. Written refund or guarantee terms
What it settles: What happens if a lab disagrees with the label.
- A clear window in days.
- What evidence counts (an accredited lab report).
- What is and is not refunded (lab fees, delivery).
4. Written delivery terms
What it settles: How long it takes, what it costs and how it is packed.
- Times and fees by region.
- The dispatch cut-off.
- Cold packaging and plain outer packaging.
5. A business name and a contact you can reach
What it settles: Who you are dealing with after the sale.
- A trading name used consistently across the site and chat.
- A contact channel that answers before and after you pay.
- Written terms of service.
A real example
Here is a published report from our partner and supplier, with its limits spelled out. Notice that it is an endotoxin test only: it settles document 2, not document 1.
- Lab
- Janoshik
- Test
- Bacterial endotoxin (LAL)
- Result
- 6.066 EU per vial
- Analysed
- 21 September 2026
- Task
- 234146
- Key
- H2KI86I8GWB4
Tap to open the original on Janoshik's siteRead on primaralabs.com/coa on 28 September 2026. Primara Labs also states a 60-day money-back guarantee if an accredited lab disagrees with the label, and plain outer packaging with no compound names, and insulated packaging with a cold pack.
Want to check a report yourself? Use the checker in how to verify a peptide certificate.
Questions
What is a COA?
A certificate of analysis: a lab report that states what a sample contained when tested. It is only useful if it is for the lot you buy and you can verify it on the lab's website.
Is a manufacturer's certificate enough?
It is better than nothing, but it is the manufacturer testing its own product. A third-party report on the seller's stock is stronger.
What if a seller refuses to share documents?
Buy elsewhere. A seller with good documents is usually happy to show them.
Not medical or legal advice. Peptides sold as research compounds are not registered medicines with FDA Philippines and are not approved for use in people. If you are thinking about any compound for your own health, speak to a licensed physician first.
Ready to order? Primara Labs delivers same day in Metro Manila.
Prices from ₱1,190 ($20) a vial, a 60 day money-back guarantee if an accredited lab disagrees with the label, and orders placed on WhatsApp with the owner.
Keep reading
How to verify a peptide certificate of analysis
How to read a COA line by line, plus a tool that checks a Janoshik verification link.
Read the guide →Start hereHow to choose a peptide supplier in the Philippines
A ten-point scorecard you can use on any seller, and how Primara Labs scores on its own published claims.
Read the guide →CheckingPeptides in the Philippines on Reddit: what threads ask, answered
The PH subreddits, the six questions threads leave open, and a worked check you can copy.
Read the guide →