Overview

Lipid nanoparticles are the leading non-viral delivery vehicle for mRNA therapeutics, yet their performance hinges on precise control of physicochemical properties. Inconsistent size, polydispersity, or lipid degradation can compromise efficacy, safety, and shelf-life—derailing regulatory approval.

Our LNP Characterization and Stability Testing service provides a comprehensive, GMP-compliant analytical framework to evaluate the critical quality attributes (CQAs) of your formulations. We use advanced techniques including dynamic light scattering (DLS), laser Doppler electrophoresis, cryo-transmission electron microscopy (cryo-TEM), and liquid chromatography–mass spectrometry (LC/MS) to measure particle size, polydispersity index (PDI), zeta potential, encapsulation efficiency, and lipid composition.

Accelerated stability studies under controlled temperature, humidity, and light conditions help predict long-term shelf-life and identify degradation pathways. By combining these analyses with expert data interpretation, we deliver the robust characterization data required for regulatory submissions and process optimization—whether your LNP is in early-stage development or preparing for IND filing.

Integrated Analytical Platform for LNP CQAs

Explore our full suite of analytical services →

Our Characterization and Stability Testing Modalities

We offer a modular suite of analytical methods tailored to your LNP formulation stage and regulatory requirements. Each modality is executed under GMP-like conditions with full documentation.

• Particle Size & PDI (DLS, MALS): Dynamic light scattering (DLS) and multi-angle light scattering (MALS) for accurate size distribution and polydispersity index. Suitable for routine QC and stability monitoring.
• Zeta Potential (Laser Doppler Electrophoresis): Measurement of zeta potential as a surrogate for surface charge, indicating colloidal stability and potential for aggregation. Performed in various buffer conditions.
• Encapsulation Efficiency (RiboGreen™ Assay): Fluorescence-based quantification of encapsulated mRNA, with a linear range optimized for therapeutic LNP formulations. Reports free vs. encapsulated RNA ratio.
• Cryo-TEM Morphology Analysis: Vitrified sample imaging at cryogenic temperatures, enabling visualization of nanostructure, lamellarity, and internal morphology. AI-driven image analysis provides quantitative metrics.
• Lipid Composition & Stability (LC/MS): High-resolution mass spectrometry for identification and quantification of all lipid components, including degradation products. Used to assess chemical stability under accelerated conditions.

How Our LNP Characterization Service Works

Our streamlined workflow ensures rapid turnaround of reliable data while maintaining flexibility to adapt to your specific formulation needs.

• 1. Sample Submission & Consultation: You provide your LNP formulation (or we can formulate it for you). Our scientists review your project goals, regulatory timeline, and desired CQAs to design a tailored analytical plan.
• 2. Initial Physicochemical Characterization: We perform a battery of standard tests: particle size, PDI, zeta potential, and encapsulation efficiency. Results are reported within a few days, allowing you to identify any immediate formulation issues.
• 3. Accelerated Stability Study: Samples are placed under controlled stress conditions (e.g., elevated temperature, humidity, light). Time-point aliquots are withdrawn and analyzed for changes in particle size, polydispersity, encapsulation efficiency, and lipid composition.
• 4. Advanced Morphological & Chemical Analysis: Selected samples are imaged by cryo-TEM to assess morphology, and LC/MS is used to quantify lipid content and detect degradation products. These data are integrated into the final report.
• 5. Final Report & Regulatory Documentation: We compile all results into a comprehensive report formatted for regulatory submission. Reports include raw data, methodology details, and a stability summary with recommended storage conditions and shelf-life projection.

Project Timeline

Typical timelines for a standard characterization and stability study are outlined below. Please note that timelines are project-dependent and will be confirmed during the consultation phase.

• Project Kickoff: Sample submission, data review, and finalization of the analytical plan. Typically completed within the first week.
• Initial Characterization Results: Preliminary size, PDI, zeta potential, and encapsulation efficiency data reported. Allows for early go/no-go decisions.
• Stability Study Completion: All time-point samples analyzed for stability endpoints. Accelerated study duration is typically 4–8 weeks, depending on conditions.
• Advanced Analysis (Cryo-TEM, LC/MS): Morphological and chemical analysis performed on selected samples. Results integrated into the final report.
• Final Report Delivery: Comprehensive report with all data, interpretation, and regulatory documentation. Delivered in a format suitable for IND or other submissions.

Timelines are estimates; actual durations depend on the number of samples, analytical methods selected, and regulatory requirements. We work with you to align with your submission deadlines.

Quality & Compliance

Our LNP characterization and stability testing services are conducted under a robust quality management system aligned with GMP principles. We follow standard operating procedures (SOPs) for all analytical methods, and instruments are calibrated and maintained per manufacturer specifications.

Data integrity is ensured through electronic systems with audit trails, and all reports include raw data, method details, and acceptance criteria. For projects requiring GMP-compliant documentation, we can provide certificates of analysis and additional regulatory support as needed.

Our team of PhD-level scientists brings extensive experience in nanoparticle characterization and mRNA therapeutic development. We stay current with evolving regulatory expectations from FDA, EMA, and other agencies to ensure your data package meets international standards.

Why Choose Our LNP Characterization Service

• Comprehensive Platform Under One Roof: We offer a full suite of analytical methods—DLS, zeta potential, encapsulation efficiency, cryo-TEM, LC/MS, and more—eliminating the need to coordinate multiple vendors.
• GMP-Ready Documentation: Our reports are designed to support IND and other regulatory filings, with detailed method descriptions, raw data, and acceptance criteria. We can also provide certificates of analysis on request.
• Expert Scientific Guidance: Our team includes PhD-level scientists with deep experience in lipid nanoparticle characterization and mRNA therapeutic development. We provide interpretation of results and recommendations for formulation optimization.
• Flexible, Scalable Service: Whether you need a single characterization run or a multi-month stability study, we adapt to your project scope. We can also handle multiple formulations simultaneously for comparative analysis.
• Data Integrity & Traceability: All data is captured in electronic systems with audit trails, ensuring compliance with 21 CFR Part 11 requirements. Raw data is retained for your review.

Formulation Types We Support

Our characterization and stability testing services are designed for a wide range of lipid nanoparticle formulations, including those for mRNA therapeutics, siRNA, and other nucleic acid cargoes.

• Ionizable Lipid LNPs: Standard formulations for mRNA delivery. We characterize size, PDI, encapsulation, and stability under various stress conditions.
• PEGylated LNPs: Formulations containing PEG-lipids for extended circulation. We evaluate the impact of PEGylation on particle size, zeta potential, and stability.
• Multicomponent LNPs: Complex formulations with multiple helper lipids. Our LC/MS method quantifies each component and monitors degradation pathways.
• Cationic Lipid LNPs: Formulations with permanently charged lipids for nucleic acid delivery. We assess zeta potential and colloidal stability in physiological buffers.
• Empty LNPs: Placebo formulations for control experiments. Characterization includes size, PDI, and stability comparisons to loaded counterparts.

Contact Us

Whether you need comprehensive physicochemical characterization, stability studies, or regulatory support for your LNP formulations, our analytical team is ready to design a testing plan tailored to your product stage and regulatory goals. Contact us today to discuss your project requirements.