Protein & Peptide Testing for Quality control
Reliable protein & peptide testing designed for quality control. ISO 17025 accredited methods with detailed reporting to meet your regulatory requirements.
ISO 17025 
48 小时出结果 
100% 保证 
快速解答
Protein & Peptide Testing for quality control ensures products meet the specific regulatory and quality standards required for market entry. ISO 17025 accredited laboratories like Qalitex provide validated testing methods, detailed COA reports, and expert guidance to support quality control processes efficiently.
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.
Achieving quality control requires accurate, accredited laboratory testing that regulatory bodies and marketplace platforms trust. Qalitex Laboratories provides protein & peptide testing tailored for quality control requirements. 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. Our ISO 17025 accredited methods and detailed COA reports are designed to streamline your quality control process.
How Protein & Peptide Testing Supports Quality control
Quality control requires documented evidence of product safety and quality. Qalitex provides the specific testing and documentation needed to support your quality control process, including detailed COA reports, method validation documentation, and expert consultation on testing scope. Our ISO 17025 accreditation ensures your results are accepted by regulatory bodies and marketplace platforms.
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.
主要检测项目与方法
适用标准
服务行业
检测流程
三个简单步骤获取结果
提交样品
将样品连同订单表格寄送至我们的尔湾或圣地亚哥实验室。
检测与分析
我们的 ISO 17025 认证科学家使用经过验证的检测方法进行分析。
收取 CoA 报告
在 48–72 小时内获得签名的合格证书。
常见问题
常见问题解答
What testing is required for quality control?
Quality control typically requires identity testing, purity analysis, potency verification, and contaminant screening. The exact panel depends on your product type and target market. Qalitex Labs can recommend the appropriate testing scope for your specific quality control needs.
How long does testing take for quality control?
Standard turnaround at Qalitex is 5–7 business days, with rush 48-hour service available for most test types. We recommend planning testing 2–3 weeks ahead of your quality control deadline to allow for any retesting if needed.
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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