The largest independent peptide quality database in the US
Choose lab verification at checkout and your order ships to a US partner lab near you. One vial of each product is pulled for HPLC + mass spec, then the whole order is forwarded to your door via USPS Priority — with a batch-specific COA. Every result publishes to the product's public quality score.
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 every verified order ships straight to the lab, the supplier knows it will be tested. 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.
Two sources, compared head-to-head
See verified purity per source (Pepturion vs Lanyun) on every product and choose for yourself — we recommend the better source by purity, not just price.
Public, growing quality database
Every result rolls into each product's public quality score and grade, building one of the largest independent peptide quality datasets in the US.
- • Package a vial yourself
- • Find & ship to a lab ($10–15)
- • Wait an extra week
- • One checkbox at checkout
- • Lab tests & forwards to you
- • Zero extra hassle
- • Per vial vs. independent testing
- • No self-shipping costs
- • Faster, tracked final leg
Manufacturer → US lab → you
We buy directly from the manufacturer and route your order straight to an independent US testing facility, then to your door. Cutting out the US retail middleman is why a verified kit costs up to 10× less than the same compound from a domestic shop.
Manufacturer
Direct from the source (China)
No US distributor markup
US Testing Lab
HPLC + mass spec verification
One vial tested per product
Your Door
USPS Priority, tracked
Tested kit + batch COA
We never warehouse or touch product. Each kit ships individually — the lab is a verification checkpoint, not a warehouse.
Our partner lab network
Pins update to recommend the closest facility to your shipping state.
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.
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.
Bryan, TX· ~851 mi bioviridians.com
Fastest turnaround (1-2 business days). Adds MALDI-MS + net-peptide-content. Strong technical complement; central US.
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.
International labs
For research customers outside the US. Not part of US checkout yet — we're expanding international routing as we grow.
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.