The independent US labs we work with
We work with a network of independent US analytical labs for HPLC + mass spec verification. One vial of each product is pulled for testing and every result — with its batch-specific COA — publishes to the product's public quality score, so what you see comes straight from the lab, not the vendor.
Testing you can actually trust
Most “verified” peptide listings rely on a COA the vendor chose to show you. Ours work the opposite way — results come straight from an independent lab on orders bought here, so they can't be faked, edited, or cherry-picked.
Lab-direct, never customer-uploaded
We only show results from orders purchased on Peptuvia and shipped directly to the testing facility. The COA comes from the lab to us — customers can't upload their own, so nothing can be forged or doctored.
Suppliers held to ≥99%
Because the labs we work with test orders bought here, the supplier knows their material will be checked. Anything that comes back under 99% means a refund or reship on their dime — a powerful incentive to send only their best material.
No cherry-picking — every result shown
We publish all results for each source, passes and failures alike. A vendor can't surface only their best batch; the full history is on the product page.
Batch-specific, not a stock COA
Each result ties to the actual batch that shipped — not a generic certificate from a sample sent months ago for marketing.
Real US labs we partner with
Verification runs at established, independent US analytical facilities we work with directly — the same labs listed in our network below, each with published rates and public track records on Finnrick and Janoshik.
Two sources, compared head-to-head
Both sources (Veridian Health and Orchid Cloud) are listed on every product so you can compare price and — as verified results come in — purity per source, and choose for yourself.
A public quality database, built order by order
Every result rolls into each product's public quality score and grade, building an independent peptide quality dataset that grows with every verified order.
Both of our sources are tracked on public independent lab databases — Finnrick and Janoshik — third parties we don't control. The COA count below is their combined published total:
Local warehouse → your door
Many sources ship from in-region warehouses — in the US, UK, EU, Australia, and Canada — for fast local delivery; others ship direct from the manufacturer. Cutting out the US retail middleman is why your order costs 10–12× less than the same compound from a domestic shop.
Regional warehouse
Ships from a US, UK, EU, Australia or Canada warehouse — or direct
Fast in-region shipping
Your door
Tracked delivery to your address
Fast & tracked
Sources ship from their own regional warehouses (US, UK, EU, Australia, Canada) or direct from the manufacturer. Peptuvia is the marketplace, not the manufacturer — so you get the same compound without the US retail markup.
Our partner lab network
The independent US labs we work with, sorted to show the facility closest to your state first.
Bryan, TX· ~851 mi bioviridians.com
CONFIRMED PARTNER & DEFAULT LAB. Accepts recurring mail-in lyophilized samples and individual customer orders; after analysis forwards the remaining product to the customer (or coordinates alternative shipping). $150/sample for Identity + Purity + Net Peptide Content (HPLC/MS), identity confirmed by mass spec. Fastest turnaround (1-2 business days). Central US (Bryan, TX).
Sun City Center, FL· ~61 mi acslabtest.com
Established multi-modality lab (HPLC + ESI-MS); accepts samples nationwide. Rush 2-3 day option. East-coast anchor.
Franklin, TN· ~569 mi freedomdiagnosticstesting.com
TN partner lab — live & bookable. Pricing: Purity & Identification (HPLC/MS) $200 base; Net Peptide Content +$25 (bundled with Purity & ID); Endotoxins $175 and Sterility/PCR $150 (each needs an additional vial — one extra vial covers both); Conformity $50 per additional vial; Fentanyl screen $40. Every submission MUST include their Peptide Purity Testing Intake Form, and the Company/Organization name on that form is the ONLY name printed on the COA. Credit-card payment only (secure portal or card-authorization form) — no crypto payout.
Goodlettsville, TN· ~590 mi colmaricanalyticals.com
Traditional ISO-certified CRO; detailed reports. Consultative intake. Southeast coverage.
Houston, TX· ~786 mi zyntrotest.com
Agilent LC-MS, explicitly mail-in/COA for vendors & researchers. Good price tier. Exact city issued at order.
Austin, TX· ~928 mi krauselabs.com
Full-service contract lab — HPLC-UV, LC-MS, residual solvents, heavy metals, amino-acid analysis. Broad capability at a low price; strong recurring-volume fit. Central US.
Austin, TX· ~930 mi finnrick.com
Independent test broker (anonymizes samples → commercial lab); publishes public ratings. Free-sample program. Best for transparency.
Detroit, MI· ~949 mi peptidetest.com
USP <1225>-validated HPLC + mass, transparent published pricing, customer-friendly portal/group-buy. Midwest coverage.
Tucson, AZ· ~1716 mi mzbiolabs.com
High-end instrumentation (Waters/Bruker/Thermo), AZ DEA license, optional GLP. Strongest US technical credibility for identity + purity.
San Diego, CA· ~2076 mi ils-lab.com
ISO 17025 accredited. Full QC panel (purity, identity, endotoxin, metals, sterility) with QR-verifiable COAs. West-coast anchor.
San Francisco, CA· ~2378 mi anresco.com
ISO/IEC 17025:2017, FDA-recognized; family-run since 1943. Accredited US tier — confirm peptide-specific mail-in workflow.
Olympia, WA· ~2515 mi vanguardlaboratory.com
ISO/IEC 17025:2017-accredited WA lab — peptide purity & quantity by USP <1225>-validated HPLC, MS identity, and UV-Vis, plus residual solvents & elemental impurities. QR-verifiable COAs via verifiedbyvanguard.com; 5–8 day turnaround. Pacific Northwest coverage. Coming soon — onboarding in progress, not yet bookable.
Bioviridian is one of our established partners today. We're actively onboarding more independent labs to broaden coverage and keep verification fast and affordable.
International labs
Independent labs we work with outside the US, as we expand our international network.
Prague, Czech Republic
6-day turnaround · Community gold standard worldwide; public COA verification, full QC panel. Default international/EU anchor (also ships globally).
Zug, Switzerland
8-day turnaround · Accredited Swiss lab (EN/ISO 17025 + GMP) with a verifiable-report system; long community history for quantitative HPLC. Confirm MS-identity availability.
London, United Kingdom
7-day turnaround · Purpose-built independent UK verifier (HPLC + LC-MS + LAL endotoxin, QR-secured COAs). Closest UK analogue to Janoshik. Brokers to a UK partner lab.
Birmingham, United Kingdom
10-day turnaround · Reputable UK peptide synthesis + analytical house (HPLC, MS, amino-acid analysis) accepting external samples. Confirm accreditation + pricing.
What the tests measure
HPLC — High-Performance Liquid Chromatography
Separates the sample into its components and quantifies how much of the target peptide is present relative to impurities. This is where the purity percentage comes from.
Mass Spectrometry
Confirms identity by measuring the molecular weight of the compound. It answers a different question than HPLC: is this actually the peptide it claims to be?
Optional add-ons
Several partners also offer endotoxin (LAL) and heavy-metal (ICP-MS) screening for research applications that require sterility and elemental-impurity data.
How to read a COA
- IdentityMass spec confirms the molecular weight matches the target peptide. Look for “confirmed.”
- Purity %The HPLC peak area for the target compound. We treat ≥98% as a pass.
- Batch / lot codeTies the result to a specific production batch — the code you enter on our verification page.
- Test date & labWhen and where the analysis was run, with the analyst's signature or stamp.