Independent third-party peptide testing.
Know exactly what's in the vial. KMD Analytical is an independent, third-party peptide testing lab — we don't sell peptides, so we have no reason to tell you anything but what the instrument measured.
$150 per vial · $125 at 5+ · $100 at 10+. See pricing
You mail us a vial; we tell you what's in it. Every result is issued as a certificate of analysis you, or anyone you send it to, can verify cryptographically. We're a division of KMD Group LLC, based in Chatsworth, California, and we accept mail-in samples from anywhere in the United States and, by express courier, from overseas (see the international questions below).
What we measure on every peptide
Each certificate reports three numbers, and we report all three because any one of them alone can mislead you:
- Identity — we confirm the compound is what it's labeled as, by matching its retention time and UV spectrum against a certified reference standard for that peptide. If it doesn't match the standard, it isn't the peptide.
- Chromatographic purity — the area-percent of your target peak relative to everything else the column resolved. This is the “how pure” number, expressed as a percentage.
- Net-peptide assay (mg per vial) — how many milligrams of actual peptide are in the vial, quantified against the reference standard. This is the number most testing skips, and it's the one that tells you whether a “10 mg” vial is really 10 mg or 6.
Purity and content are not the same thing. A vial can be 99% pure and still be badly underfilled, and it can hold the full labeled mass while carrying impurities you'd want to know about. Reporting only one hides the other. We report both — more on purity vs. net-peptide content.
How we test
All analysis is by reversed-phase HPLC with UV detection (diode-array) at 214 nm, on calibrated instrumentation, run against certified reference standards. That's our scope, and we state it plainly. We validate the method for each compound before we report a number against it.
We keep the specific method recipe — column chemistry, mobile phase, and gradient — proprietary and off the certificate. What you get on the COA is the result and everything you need to trust it, not our recipe.
What we don't do — and will tell you plainly
Honesty about our limits is part of the service. KMD is an RP-HPLC-UV lab. We do not run LC-MS / mass-spec confirmation, residual-solvent analysis, heavy-metals testing, or sterility and bioburden testing. The one microbiological test we run is bacterial endotoxin (USP <85>, kinetic chromogenic LAL), in-house, as a $150 per-vial add-on reported on its own certificate; it is not a sterility test. If your job genuinely needs a capability we don't have, we'll say so and point you toward a lab that does — rather than quietly running something adjacent and calling it done.
Certificates you can actually verify
Every COA we issue carries a unique QR code and a SHA-256 hash. That hash is a fingerprint of the exact PDF. Anyone can drop the certificate into our verifier and confirm two things independently: that KMD issued it, and that not a single character has been altered since we did. Change one digit of a purity result or a milligram figure and the check fails.
Most COAs in this space can only be trusted as far as you trust whoever handed you the file. Ours can be checked by a stranger. That's the point — see a sample COA.
Turnaround and pricing
Standard turnaround is typically 5–7 business days from receipt, 7 business days maximum on any order size, with next business day rush service on orders up to 4 vials (received by 12:00 PT). Larger expedited batches and same-day are available by arrangement. Turnaround is measured from when your sample arrives — shipping is separate. Per-sample pricing starts at $150, with bulk rates from five samples and a volume rate at ten or more. The full menu, panel, and rush surcharges are on our pricing page.
Who sends us samples
- Buyers who have a vial they don't trust and want an independent read on identity, purity, and how many milligrams they actually received.
- Vendors and compounders who want third-party COAs their customers can verify, on the vials they send. See testing for vendors and brands.
- Researchers who need a documented, reference-standard-calibrated identity, purity, and content result for material they're about to use.
Pooling vials for a group? Group testing puts them on one order.
How to send a sample
Place your order on the order form first, one line per vial. Pay the invoice, and the shipping address and packing steps arrive by email. Write your order number on the outside of the package and send sealed vials only to our Chatsworth lab. Sending from within the state? See peptide testing in California. The full steps are on the submission page.
Testing details by compound
We keep a detail page for each peptide we test — what we measure on it, how the result is reported, and where the method's limits are. Browse the full list of peptides we test.
Peptide testing — FAQ
Do you sell peptides?
No. KMD Analytical is an independent, third-party testing lab only — we don't sell peptides, so we have no incentive to report anything but what the instrument measured.
What do you test on each peptide?
Three numbers on every sample: identity (against a certified reference standard), chromatographic purity (area %), and net-peptide assay — the actual milligrams of peptide per vial, which most testing skips. More on purity vs. net-peptide content.
Do you run LC-MS / mass spec, sterility, or heavy-metals testing?
No. We're an RP-HPLC-UV lab and we say so plainly. We do not run mass-spec confirmation, sterility, or heavy-metals testing. The one addition is bacterial endotoxin (USP <85>, kinetic chromogenic LAL), run in-house as a $150 per-vial add-on and reported on its own certificate — it is not a sterility test. If your job needs a capability we don't have, we'll tell you and point you to a lab that does.
How long does testing take?
Standard turnaround is typically 5–7 business days from when your sample arrives at our lab, with 7 business days as the maximum. Rush (+100%) is the next business day: vials received by 12:00 PT, certificate by the end of the next business day, on orders up to 4 vials. Larger rush batches are quoted by arrangement. Turnaround is measured from receipt — shipping is separate.
How much does it cost?
Per-sample pricing is $150, dropping to $125 at 5+ samples and $100 at 10+. See full pricing. Every result is issued as a certificate anyone can verify.
Can I trust the certificate you issue?
Every COA carries a QR code and a SHA-256 hash — a fingerprint of the exact PDF. Anyone can drop the file into our verifier to confirm KMD issued it and that not a single character has been altered. See a sample COA.
Can I send samples from outside the United States?
Yes — by express courier (FedEx, UPS or DHL Express), not by post: since 24 July 2026 every postal parcel entering the US needs its own customs entry and bond, while a courier's brokerage files the entry. Address the box to KMD Group LLC dba KMD Analytical as a laboratory sample for analytical testing, ship sealed vials at room temperature, and ask for our customs declaration and letter of purpose if useful. Transit and customs time are on top of turnaround. Full steps are on the submission page.
What do I declare on the customs paperwork?
One line per vial on the commercial invoice: "Synthetic peptide, lyophilized powder, X mg, sealed glass vial — laboratory sample for analytical testing only, not for resale, not for human or animal use, non-hazardous." Declare a realistic replacement value for each vial — never zero, and never "no commercial value" on its own — and select duties and taxes billed to the shipper. On request we supply a customs declaration and letter of purpose on our letterhead; it is an accommodation, not a guarantee of clearance.
Do you charge VAT or GST, and what currency do I pay in?
All prices are in US dollars (USD). Your card issuer converts at its own rate and may add a foreign-transaction fee. We do not add VAT or GST to invoices — the service is performed in California. Business customers can have their tax ID printed on the invoice on request. Any US duty, brokerage or carrier fee on an inbound parcel is the shipper's.