Third-Party Peptide Testing Labs — Independent Purity Verification | Path to Peptides

Why Independent Testing Matters

A supplier-issued COA is produced by the same entity that manufactured the compound. Independent third-party testing provides an objective, unaffiliated quality benchmark. Research integrity depends on verified data — not self-reported claims.

Lab Directory

10 labs listed — from community-standard to enterprise GMP. Prices are approximate; contact labs for current quotes.

Janoshik Analytical

Czech Republic — Europe

HPLC · LCMS · Endotoxin · Sterility

~$828 GLP-1 panel

Most referenced lab in the research community. QR-verified COAs with batch traceability. 5,986+ samples tested.

ACS Peptide Testing

USA

HPLC · Mass Spec · Screening Panels

$150 – $1,500

US-based ISO-certified analytical lab. Broad testing scope from basic HPLC to comprehensive multi-analyte panels.

Finnrick Analytics

Texas, USA

HPLC Purity · Dosage · Endotoxin

FREE basic purity

Community-funded free testing program. Found an 8% endotoxin positivity rate across submitted samples — significant contamination data point.

ZyntroTest

LCMS · Purity · Identity Confirmation

$200 / sample

Accessible US LCMS testing at a flat per-sample rate. Good option for researchers needing identity confirmation without enterprise pricing.

Ethos Analytics

Purity · Quantitation · Method Development

Quote-based

One of the few ISO 17025-accredited labs accepting individual researcher samples. Rigorous accreditation standard for measurement competence.

Eurofins BioPharma

45+ global locations

Full cGMP Suite · Stability · Characterization

Enterprise pricing

Largest global GMP testing network. Comprehensive pharmaceutical-grade analytical services. Typically used by manufacturers and CROs.

Charles River Labs

Massachusetts, USA

Peptide Bioanalysis · HPLC · SEC · Peptide Mapping

Full pharma-grade analytical services including peptide mapping, SEC characterization, and bioanalytical method development.

SGS Life Sciences

Global (150+ countries)

Analytical · Stability · Characterization · Release Testing

Multinational testing and certification network. Broad service portfolio from raw material testing to finished pharmaceutical product release.

Pacific Biolabs

California, USA

Endotoxin · Sterility · Bioburden · LAL

$100 – $500 / test

Specialist in injectable safety testing. FDA-registered facility. Ideal for researchers requiring endotoxin and sterility validation on reconstituted compounds.

Vericel Testing

Peptide ID · Purity · Potency

$175 – $400

Fast-turnaround testing service for individual researchers. Accessible pricing with results in 5–10 business days for standard panels.

How to Read a Certificate of Analysis (COA)

A COA is only as credible as the lab that issued it. Supplier-issued COAs should be treated as a starting point, not a verification endpoint. Here is what to look for in any COA:

Frequently Asked Questions

Related Tools & Resources