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A buyer’s checklist
How to verify a research peptide supplier
Eight checks anyone can do in about ten minutes before ordering from any supplier, including us. Each one is something you can confirm yourself, outside the seller’s own website.
8 checks before you order
Find the company behind the store
A real supplier names its legal entity and you can look it up in a state business registry. No legal name, no address and no registry entry is the first red flag.
Ask for a lot-matched certificate of analysis (COA)
The lot number printed on the vial should match the lot number on the report. A generic report with no lot number, or one lot reused for every batch, proves nothing about the vial you receive.
Check who tested it, and when
Look for an independent third-party lab by name and a recent test date. “In-house tested” or a report with no lab name cannot be checked.
Verify the report with the lab itself
Independent labs let you confirm a report on their own website or by contacting them with the report or lot number. If the lab has no record of it, the report is not real.
Read what was actually tested
Purity by HPLC and identity (by mass spectrometry or HPLC retention time) are the basics. Note what a report does not cover, such as sterility or endotoxins, so you know its limits.
Read the policies before you pay
A refund policy in writing, a named shipping origin with tracking, and a support contact that answers are normal for a legitimate business.
Look for independent signals
Ratings on independent vendor-comparison sites and reviews tied to real orders carry more weight than testimonials on the seller’s own pages.
Watch for red flags
Health or dosing claims, prices far below the market, crypto-only payment, no company name, copied or very old reports, and pressure to buy now. Legitimate research suppliers sell for laboratory use and make no health claims.
How Arctic Lab Supply answers each check
We built this checklist so you can hold every supplier to it. Here is our own answer to each point, with a link to the proof.
| Company | Arctic Lab Supply LLC, Alaska business entity #10337341, Anchorage, AK. Search it in the State of Alaska registry. See proof |
|---|---|
| Lot-matched COAs | Every current lot has its own report with the lot number on it, matched to the vial label. See proof |
| Testing lab and date | Current lots tested by ILS Laboratories (August 2026); earlier lots by Janoshik (February 2026). Lab name and test date are on every report. See proof |
| Verify with the lab | Each report page links to the lab so you can confirm it independently. See proof |
| What was tested | Purity by HPLC and identity confirmed; each report states exactly what was measured. See proof |
| Policies | Written refund policy, shipping from Anchorage, Alaska by USPS with tracking, support by email. See proof |
| Independent signals | Vendor ratings and verified-order reviews are linked from our evidence page. See proof |
| No health claims | Research materials for laboratory use only; we make no health or dosing claims. See proof |
Common questions
What is a certificate of analysis (COA)?
A lab report for a specific production lot. It names the lab, the test date, the methods used (for example HPLC) and the results, such as purity and identity.
What does lot-matched mean?
The lot number on the product label is the same lot number on the lab report, so the report describes the batch you actually receive.
Can I verify a lab report myself?
Yes. Independent labs let you confirm a report on their website or by contacting them with the report or lot number. Arctic Lab Supply links each report to its lab.
Is HPLC purity enough on its own?
HPLC purity is the core number, but identity testing confirms it is the right compound. Reports also have limits, for example most do not test sterility or endotoxins, so read what each one covers.
Arctic Lab Supply sells research materials for laboratory use only. Nothing on this page is medical advice, and no product is intended to diagnose, treat, cure or prevent any disease.