A California-based research peptide supplier dedicated to providing high-purity synthetic peptides for life science research applications.
Peptide California is a California-based research peptide supplier committed to providing high-purity synthetic peptides to academic institutions, independent research laboratories, and qualified researchers across the United States. Our mission is to support the advancement of life science research by ensuring reliable access to consistently manufactured, rigorously tested peptide compounds.
Every product in our catalog is manufactured under strict quality control protocols. Each production batch is accompanied by a Certificate of Analysis (COA) that has been verified through independent third-party analytical testing. We maintain transparent documentation practices so researchers can verify the identity, purity, and specifications of every peptide they procure.
Our operations are based in California, enabling us to offer same-day shipping on orders placed before our daily cutoff and to maintain direct oversight of our storage, handling, and distribution processes. We work exclusively with vetted manufacturing partners who adhere to stringent production standards, ensuring batch-to-batch consistency across our entire product line.
Quality is the foundation of our operations. We understand that the integrity of research outcomes depends directly on the purity and consistency of the materials used. Every peptide supplied by Peptide California is subjected to a comprehensive analytical testing protocol before it is approved for distribution.
High-performance liquid chromatography analysis on every batch, with a standard purity threshold of greater than 98%. Results are documented and included in each product's Certificate of Analysis.
Molecular identity of each peptide is confirmed through mass spectrometry analysis, verifying that the correct compound has been synthesized with the expected molecular weight.
Independent third-party laboratories verify our internal testing results. Every batch ships with a publicly accessible Certificate of Analysis that researchers can reference and archive.
Our manufacturing partners operate under Good Manufacturing Practice standards, ensuring controlled environments, validated processes, and full traceability from synthesis through final packaging.
Temperature-sensitive peptides are stored under appropriate cold-chain conditions and shipped with insulated packaging and cold packs to maintain product stability throughout transit.
Our quality assurance workflow is designed to ensure that every peptide reaching a researcher's laboratory meets our published specifications.
Peptide compounds are sourced exclusively from vetted and audited manufacturing partners. We evaluate suppliers based on their synthesis capabilities, quality management systems, and historical performance records.
Upon receipt, every incoming batch undergoes initial inspection and testing. We verify packaging integrity, labeling accuracy, and physical appearance before the batch proceeds to analytical testing.
Each batch is subjected to high-performance liquid chromatography analysis to quantify purity. Our standard threshold is greater than 98% purity. Batches that do not meet this threshold are rejected.
Molecular identity is verified through mass spectrometry. The observed molecular weight is compared against the expected value to confirm correct synthesis and rule out contamination.
Where applicable and as required by product specifications, batches undergo sterility testing and endotoxin analysis to ensure they meet safety requirements for laboratory research use.
Upon successful completion of all testing, a Certificate of Analysis is generated documenting the batch number, testing methodology, results, and date. COAs are published to our online COA Library.
Same-day shipping on orders placed before daily cutoff. Direct oversight of storage, handling, and distribution from our California facility.
Our support team is available to assist with product inquiries, bulk order coordination, and technical questions about peptide specifications.
We offer competitive pricing structures including volume discounts and institutional purchase order support for academic research programs.
All Certificates of Analysis are publicly accessible online. Search by product or batch number for complete analytical documentation.
We maintain reliable inventory levels of commonly researched peptides to minimize lead times and ensure researchers can access the compounds they need.
Monday – Friday
9:00 AM – 5:00 PM PST
California, United States
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