Certified Peptides Quality Assurance

At Certified Peptides, transparency and trust are at the heart of everything we do.

Every batch
third-party verified

We third party test every product in an ISO/IEC accredited laboratory, certified by the board ecology, for endotoxins, heavy metals, purity and content.

At Certified Peptides, quality is our top priority. Every product we offer is rigorously tested using the most advanced technology available in the United States. We work exclusively with leading U.S. laboratories to verify purity, content, endotoxins, and heavy metals. Choosing a lab-tested, third-party verified peptide supplement is essential for ensuring both purity and safety, and at Certified Peptides, we take that responsibility seriously.

WE TAKE THAT RESPONSIBILITY SERIOUSLY

Certified Lab Testing

At Certified Peptides, quality is our top priority. Every product we offer is rigorously tested using the most advanced technology available in the United States

Peptide Purity and Quantity

each peptide undergoes comprehensive analysis for purity, identity, and structural integrity

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Endotoxin Testing

To protect our customers, we perform rigorous testing to detect and quantify endotoxins

Heavy Metal Testing

Certified Peptides products are free of harmful contaminants and safe for use

Sterility Testing

We ensure that products or samples are completely free of viable microorganisms through carefully controlled, contamination-free analytical procedures.

Lab testing photo with vials and equipment

Where we test ?

Vanguard Laboratory, located in Olympia, Washington

Vanguard Laboratory

Vanguard Laboratory, located in Olympia, Washington, offers comprehensive microbiological and chemical analysis services for a wide range of applications. The laboratory is ISO/IEC 17025:2017 accredited, the most widely recognized and respected standard for testing laboratories, confirming its ability to produce precise, accurate, and reliable results. In addition, Vanguard Laboratory is accredited through the Department of Ecology and the Department of Health for the analysis of Drugs and Controlled Substances, ensuring compliance with stringent state and federal requirements.

Elevate research with Advanced Testing

Their advanced testing capabilities include endotoxin, heavy metals, purity, and sterility tests, as well as USP <61> (Microbial Enumeration Tests) and USP <71> (Sterility Tests). These analyses are conducted under strict quality assurance protocols, reflecting the laboratory’s dedication to robust quality control and regulatory excellence.

Next-level insight

Vanguard Laboratory is recognized for its industry-leading service, technical expertise, and commitment to supporting clients with dependable, high-quality analytical data essential for research, manufacturing, and product validation.

Browse COA Library
Yes, all peptides undergo HPLC and mass spectrometry analysis for purity verification.
Our peptides typically test at over 99% purity. Each batch is verified using laboratory methods such as HPLC, with supporting documentation available in the COA library when applicable.
Peptides are most commonly produced using solid-phase peptide synthesis (SPPS), a standard method where amino acids are added step-by-step in a controlled sequence. After synthesis, the peptide is cleaved, purified (often via HPLC), and verified using analytical testing such as mass spectrometry to confirm identity and purity.
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