First-Time Peptide Buyer Checklist for Canadians (2026)
Published: 2026-08-03 · Last updated: 2026-08-03
Your first peptide order is different from every subsequent one. You don't know the vendor, you don't know what a real CoA looks like in the wild, and you probably don't have your storage or peripherals sorted. This checklist walks through what to think about before you place the order, during checkout, when the box arrives, and after. Twenty minutes of preparation up front saves a week of "wait, is this normal?" later.
What should I check before I even place the order?
Start with the vendor. Are they Canadian? A Canadian vendor means domestic shipping, no customs surprises, and easier support conversations. Look for a physical address on the contact page, a corporate name you can look up in a Canadian corporate registry, and third-party reviews outside their own site.
Then check the specific product. Open the CoA (it should be linked from the product page, or downloadable without logging in). Confirm it shows HPLC purity and mass-spec identity, from a named third-party lab, with a batch number. Skim the shipping and refund policies. Read the "research use only" language on the site — a shop that hides RUO in the footer and makes therapeutic promises at the top of the product page is one to skip.
Finally, check the price against three other reputable vendors. You're not looking for the cheapest — you're looking for a price that's in the same neighbourhood as the rest of the market. Dramatic outliers on either side are worth understanding before you commit.
Which payment method should I use for a first order?
Credit card if the vendor accepts it. The chargeback window from Visa or Mastercard is the only real recourse if the order goes wrong, and for a first order with an unfamiliar vendor, that safety net is worth more than any small crypto or e-Transfer discount you might get.
Interac e-Transfer is fine once you've built a relationship with a vendor — after two or three successful orders you can switch to Interac to save the vendor a few dollars in processing. Crypto is the option with the most vendor benefit and the least buyer protection; use it if you already know the vendor is reliable.
Full breakdown by method: payment methods guide.
What supplies should I have ready before the box arrives?
For storage: a freezer that reliably holds -20°C or lower. Household freezers are fine for research storage as long as they're not the kind that defrosts on a cycle (frost-free freezers can dry out vial seals over months). If you're only storing for a few weeks, the fridge works for lyophilised vials.
For reconstitution (if your research requires it): bacteriostatic water (0.9% benzyl alcohol, in a multi-dose vial), sterile alcohol swabs, and syringes appropriate for your assay. Buy all three from a Canadian lab supply vendor or pharmacy — Amazon is a surprisingly reasonable source for bac water and swabs, though quality varies by seller.
Note: this site does not provide dosing information or human-use guidance. The supplies above are for laboratory reconstitution to prepare a peptide solution for research assays. If you're planning any other use, that's a conversation for a physician, not a peptide buying guide.
What do I do the moment the package arrives?
Photograph the outer packaging before you open it. Look for signs of tampering, water damage, or crushing. If the package is visibly damaged, take a wide shot showing the damage and the shipping label together — this is your evidence if the vials inside are broken.
Open carefully over a clean surface. Small vials can roll off a counter. Photograph the contents against the packing slip so you have a record of what you received and what was advertised. Read the batch numbers on the vials and compare to the CoA the vendor sent (or the CoA on the vendor's product page). Confirm the peptide names on the vials match what you ordered.
Move vials into storage as soon as you've completed the inspection. Room-temperature transit is fine, but the sooner you get lyophilised vials into the fridge or freezer, the longer their shelf life stays intact. Don't leave them on the counter for days while you decide what to do with them.
How do I verify the CoA once I have the vials in hand?
Four quick steps, about five minutes total. Confirm the lab named on the CoA is a real findable lab (Google it). Match the batch number on the CoA to the batch number on the vial (they should be identical). Read the HPLC purity and mass-spec identity numbers to make sure they're in the expected range for a well-made peptide. Cross-reference with the vendor's public batch registry if they have one, or via a support email if they don't.
Anything that doesn't match, email the vendor before you use the peptide. The CoA verification guide has the full walkthrough with what to look for at each step.
What if something is wrong with the order?
Contact the vendor within 24 to 48 hours of delivery, with your photos and specifics. Legitimate vendors want to know about damage, shortages, or mismatches as soon as possible — the earlier you report, the easier it is to file a claim with the carrier or replace from stock. Waiting a week to report a broken vial makes everybody's life harder.
If the vendor doesn't respond within a few business days, escalate. If you paid by credit card and the vendor is ignoring you, the chargeback window is your fallback. Save every email — you'll need them if a dispute goes formal.
If the first order went smoothly, that's data too. Repeat with a slightly larger order the next time. A vendor who nails three orders in a row is one you can bulk-order from with confidence.
Questions Canadian buyers ask
How much should I spend on my first order?
Small. Order one vial or a small kit from a vendor you're testing. Verify the CoA, evaluate the packaging and turnaround, and see how support responds if you have any questions. A first order is a vendor audition, not a stockpile. Once you've confirmed you like working with them, scale up.
What supplies do I actually need before the order arrives?
For pure research storage, a freezer that reliably holds -20°C is enough. If you plan to reconstitute for downstream lab work, you'll want bacteriostatic water (0.9% benzyl alcohol), sterile alcohol swabs, and appropriately-sized syringes for whatever your assay needs. Buy those from a lab supply vendor, not from the peptide vendor — separation of concerns is a good habit.
What if I'm unsure about the vendor after ordering?
Trust that instinct. If something felt off about the checkout, the confirmation email, or the shipping notification, hold off on using the product until you've done the CoA verification and any additional due diligence. Most first-time-buyer regret comes from ignoring an early warning sign because "the price was really good."
How should I store a research peptide once it arrives?
Lyophilised (freeze-dried) vials go in the freezer for long-term storage, or the fridge if you'll use them soon. Once reconstituted with bacteriostatic water, the solution goes in the fridge and has a stability window that depends on the peptide — anywhere from a couple of weeks to a few months. Check the peptide-specific storage note on the product page.