Protein & Peptide Testing Near Irvine & San Diego, CA — ISO 17025 Accredited Lab
ISO 17025 accredited protein & peptide testing from our Irvine and San Diego laboratories. Fast turnaround, precise results, regulatory-ready COA reports.
ISO 17025 
Resultados em 48 h 
100 % garantia 
Resposta rápida
Protein & Peptide Testing near you is available through ISO 17025 accredited laboratories like Qalitex Labs, which operates facilities in Irvine and San Diego, California. These labs use validated analytical methods including HPLC, ICP-MS, and GC-MS to test dietary supplements, cosmetics, and food products for safety, purity, and regulatory compliance.
FDA Warns Protein Powder Brands Over Nitrogen-Spiking Practices
The FDA issued a warning letter to protein supplement brands using non-protein nitrogen compounds to artificially inflate protein label claims — an issue detectable only through amino acid profile testing.
Looking for reliable protein & peptide testing near your location? Qalitex Laboratories operates two ISO 17025 accredited facilities in Southern California — Irvine and San Diego — serving brands nationwide with fast, accurate testing. Accurate protein and amino acid testing is critical for sports nutrition, meal replacement, and protein supplement brands. Qalitex Laboratories provides HPLC-based amino acid analysis and protein quantification methods that go beyond the Kjeldahl/Dumas total nitrogen approach to deliver true protein and individual amino acid data. Whether you need testing for dietary supplements, cosmetics, food products, or Amazon FBA compliance, our labs provide 48-hour turnaround with detailed Certificates of Analysis.
Why Choose Qalitex for Protein & Peptide Testing Near You
Qalitex Laboratories is one of the leading ISO 17025 accredited testing labs in Southern California, with facilities in both Irvine and San Diego. Our proximity to major metropolitan areas shipping hubs means faster sample receipt and quicker results. We combine state-of-the-art instrumentation (HPLC, ICP-MS, GC-MS, LC-MS/MS) with experienced scientists to deliver accurate, regulatory-ready results.
Amino Acid Profile Testing
We provide complete amino acid profiling (AAA) using HPLC with pre-column derivatization, covering all essential and non-essential amino acids. This allows verification of label claims for BCAA content (leucine, isoleucine, valine) and total amino acid spectrum.
Protein Content Quantification
We use Kjeldahl, Dumas, and HPLC methods to determine total protein content, verifiable to label claims. For collagen and hydrolyzed proteins, we apply hydroxyproline-based methods to distinguish true protein from non-protein nitrogen sources.
Adulteration & Spiking Detection
Protein spiking — adding low-cost amino acids to inflate nitrogen readings — is a known industry problem. Our comprehensive amino acid profiling detects unusual enrichment of specific amino acids, protecting your brand and customers from adulterated raw materials.
Ensaios e Métodos Principais
Normas Aplicáveis
Setores que Atendemos
Como Funciona
Três passos simples para os seus resultados
Envie as suas amostras
Envie amostras para o nosso laboratório de Irvine ou San Diego com o seu formulário de pedido.
Análise e resultados
Os nossos cientistas acreditados pela ISO 17025 aplicam métodos de ensaio validados.
Receba o seu CoA
Obtenha um Certificado de Análise assinado em 48–72 horas.
Perguntas Frequentes
Perguntas Frequentes
Where can I get protein & peptide testing near me?
Qalitex Laboratories operates ISO 17025 accredited labs in Irvine and San Diego, California, serving clients nationwide. Ship your samples to us and receive results within 48–72 hours.
How much does protein & peptide testing cost ?
Testing costs vary based on the specific analyses required, sample matrix, and turnaround time. Contact Qalitex Labs for a custom quote — most standard panels start at competitive rates with volume discounts available.
Is Qalitex Laboratories ISO 17025 accredited?
Yes. Qalitex Laboratories holds ISO/IEC 17025 accreditation, the international standard for testing and calibration laboratories. This ensures our methods, equipment, and quality systems meet the highest standards of accuracy and reliability.
What is your turnaround time?
Standard turnaround is 5–7 business days. Rush service with 48-hour turnaround is available for most test types. Contact us to discuss your timeline requirements.
What types of products do you test?
Qalitex tests dietary supplements (capsules, powders, gummies, liquids), cosmetics and personal care products, food and beverage items, botanical extracts, and raw materials. We serve brands, contract manufacturers, and Amazon FBA sellers.
How do I submit samples for testing?
Ship your samples to our Irvine or San Diego laboratory with a completed sample submission form. We provide prepaid shipping labels for qualifying orders. Results are delivered electronically via secure portal.
What is amino acid profile testing?
Amino acid profile testing (AAA) uses HPLC with pre-column derivatization to identify and quantify all essential and non-essential amino acids in a product. This allows verification of BCAA content and total amino acid spectrum for sports nutrition and protein supplements.
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