Renejix provides comprehensive release testing, stability testing, and storage in two cutting-edge facilities. Our stability services focus on delivering high-quality stability data to support all stages of product development. We offer stability studies for every phase of drug development, including early development, clinical trials, registration, and commercialization.

Image showing pharamaceutical facility

Our Services

Protocol Design

  • Regulatory Acumen: Our protocols are meticulously crafted, integrating stability testing considerations with a deep understanding of global regulatory requirements to ensure seamless compliance and approval processes.
  • Customization: We design stability studies that are as unique as the products they support, providing tailored solutions that meticulously address specific stability concerns and testing requirements.

Analytical Testing

  • Precision: Our assays for stability testing are conducted with unparalleled precision, quantifying active ingredients with exactitude to ensure consistent product performance.
  • Purity Analysis: We employ advanced techniques in stability testing to detect and quantify any impurities, ensuring the purity, safety, and stability of the product.
  • Dissolution Studies: Our dissolution testing for stability purposes is thorough, assessing the rate at which the drug releases into the body, which is vital for its therapeutic effect and stability profile.
  • Moisture Analysis: We meticulously measure moisture content, a key factor in the stability and shelf life of oral dosage forms, ensuring reliable stability testing outcomes.

Storage Conditions

  • ICH Guidelines Compliance: Our storage facilities for stability testing are designed to meet all ICH climatic zone requirements, ensuring products are tested under the right conditions for accurate stability assessments.
  • Long-Term and Accelerated Studies: We conduct both long-term and accelerated stability studies to predict the product’s shelf life under various conditions, providing a comprehensive understanding of the product’s stability.

Renejix’s Scientific Excellence

  • Expert Team: Our team of scientists is not just experienced; they are pioneers in the field of stability testing, bringing innovative approaches to ensure the stability of pharmaceutical products.
  • State-of-the-Art Technology: We utilize the latest technology in stability testing to provide comprehensive testing services, ensuring that our clients receive only the best data regarding the stability of their products.
  • Quality Assurance: We have a robust quality assurance system in place for stability testing, ensuring that every test we conduct is reliable and meets the highest standards of quality.

Comprehensive Reporting

  • Clarity and Detail: Our stability testing reports are detailed and clear, providing our clients with the information they need to make informed decisions about the stability of their products.

Additional Topics

  • Method Development: We develop robust analytical methods tailored for stability testing, ensuring accurate and reliable detection and quantification of product attributes.
  • Stress Testing: Our stress testing procedures are designed to evaluate the stability of products under extreme conditions, revealing potential degradation pathways and ensuring product robustness.
  • Container-Closure System Evaluation: We assess the compatibility and stability of the product with its packaging to ensure the integrity and stability of the product throughout its shelf life.


Methodological Excellence:

  • Regulatory Alignment: Our stability testing protocols are meticulously aligned with the latest ICH guidelines, FDA requirements, and EMA regulations, ensuring global compliance and consistent product evaluation.
  • Tailored Protocols: We design customized stability testing protocols that cater to the unique attributes of each product, considering factors like formulation, packaging, and intended market to ensure thorough stability evaluation.
  • Comprehensive Testing: Our stability studies are exhaustive, covering every aspect of physical, chemical, and microbiological stability, including but not limited to assay, impurities, dissolution, and moisture content to guarantee product reliability.

Technological Innovation:

  • Advanced Analytical Instruments: For stability testing, we employ a fleet of cutting-edge analytical instruments, including HPLC, UPLC, GC-MS, and LC-MS/MS, for precise quantification and identification of analytes, ensuring accurate stability profiles.
  • State-of-the-Art Chambers: Our stability chambers are equipped with advanced environmental controls to simulate a range of storage conditions, from standard to extreme, for comprehensive stability testing.
  • Real-Time Monitoring: We utilize sophisticated monitoring systems for stability testing to ensure the integrity of our storage conditions, providing continuous oversight of temperature, humidity, and light exposure.

Scientific Rigor:

  • Expert Team: Our scientists are not just experienced; they are leaders in the field of stability testing, bringing a wealth of knowledge and a passion for excellence to every project.
  • Data Integrity: We uphold the highest standards of data integrity in stability testing, with robust quality control and quality assurance systems in place to ensure the reliability of our results.
  • Innovative Approaches: We stay at the forefront of scientific advancement in stability testing, incorporating novel methodologies like accelerated stability assessment programs (ASAP) and predictive modeling to deliver faster, more accurate predictions of shelf life.

Client-Centric Collaboration:

  • Customized Service: We work closely with our clients to understand their needs and tailor our stability testing services accordingly, ensuring that we provide solutions that fit their specific requirements.
  • Transparent Communication: Our project management teams maintain open lines of communication with clients, providing regular updates and comprehensive reports throughout the stability testing process.

Quality Assurance:

  • Compliance: Our facilities and processes for stability testing are designed to meet the highest standards of cGMP compliance, ensuring that every product we handle is tested to the most stringent quality criteria.
  • Documentation: We provide thorough documentation for every stability study, supporting regulatory submissions and providing a detailed record of the testing performed.

Additional Enhancements:

  • Robust Method Validation: We ensure that our stability testing methods are robustly validated, providing confidence in the accuracy and reproducibility of our results.
  • Environmental Stress Testing: Our environmental stress testing evaluates the stability of products under adverse conditions, identifying potential degradation products and ensuring product robustness.
  • Packaging Interaction Studies: We conduct studies to assess the interaction between the product and its packaging during stability testing, ensuring that the packaging maintains product integrity and stability.
  • Lifecycle Management: Our stability testing services include lifecycle management, monitoring the stability of products throughout their commercial life to ensure ongoing compliance and performance.
  • Risk Management: We integrate risk management into our stability testing protocols, identifying and mitigating potential risks to product stability throughout the development process.


Storage Facilities And Conditions:

  • Expansive Storage Area: Our stability testing suite encompasses approximately 70,000 cubic feet of storage space, designed to accommodate a comprehensive range of stability testing conditions.
  • Chamber Autonomy: Each stability chamber is independently operated, featuring precise temperature and, where applicable, humidity controls essential for rigorous stability testing.
  • Continuous Chamber Monitoring: The integrity of our stability testing conditions is upheld through continuous monitoring via the Kaye Monitoring System and a robust hardwired security system.
  • Setpoint Accuracy: We maintain exacting temperature and humidity setpoint windows at 2 degrees Celsius and 5% relative humidity, respectively, to ensure the consistency of our stability testing environments.
  • Resilient Power Backup: All storage chambers retain full operational capability within 6 seconds of a power outage, supported by a comprehensive generator backup system, safeguarding ongoing stability testing processes.

Photostability Testing:

  • Controlled Light Exposure: Our photostability testing protocols meticulously control light exposure, ensuring that products undergo stability testing under both UVA and visible light to assess the potential for light-induced degradation.
  • Temperature Regulation: We maintain strict temperature control during photostability testing to evaluate the stability of products under the influence of light at various temperatures.
  • Integrated Light and Temperature Stress: Our stability testing includes integrated light and temperature stress studies, simulating real-world conditions to assess the photostability of products.

Chamber Qualifications:

  • Robust Monitoring System: Our stability chambers are equipped with a robust monitoring system that includes out-of-range alarms and notifications, ensuring that any deviations from the set conditions during stability testing are promptly addressed.
  • Reliable Generator Backup: A full generator backup system is in place for our stability testing chambers, guaranteeing that stability tests continue without interruption during power outages.
  • Secure Water Supply: We maintain a backup water system for our stability testing chambers, ensuring consistent humidity control and uninterrupted operation during stability testing.

Types Of Sample Storage:

  • Drug Products: Our stability testing facilities are equipped to store a wide range of drug products, ensuring that each product’s stability is meticulously monitored under prescribed conditions.
  • Drug Substances: We provide specialized storage for drug substances, maintaining the integrity of these essential components during stability testing.
  • Placebos: Placebos are stored with the same rigor as active drug products in our stability testing protocols, ensuring control samples are kept under ideal conditions.
  • Comparator Drug Products: Comparator drug products are a crucial part of stability testing, and we ensure they are stored under conditions that match the test products for accurate comparisons.
  • Controlled Medications: Controlled medications require stringent storage conditions for stability testing, and our facilities are designed to meet these exacting standards.

Compliance & Standard

CDMO Renejix: Rigorous Regulatory Compliance for Stability Testing

At CDMO Renejix, our commitment to regulatory compliance in stability testing is unwavering. We ensure that every product undergoes rigorous stability testing, adhering to the highest standards and preparing it for successful market entry.

Compliance with cGMP Standards:

  • Quality Systems: Our quality systems are the backbone of our stability testing operations, ensuring consistent, high-quality outcomes.
  • Facility Design: Purpose-built to exceed cGMP requirements, our facilities are optimized for stability testing, mitigating risks and ensuring product integrity.
  • Material Control: From receipt to usage, we exercise meticulous control over all materials, a critical component of stability testing.
  • Production Protocols: Crafted to guarantee reproducibility, our production protocols are central to our stability testing adherence to specifications.
  • Packaging Integrity: In stability testing, we uphold the highest standards in packaging and labeling, crucial for product protection and information accuracy.
  • Laboratory Excellence: Our laboratories are precision hubs, where stability testing and procedures uphold our commitment to cGMP principles.
  • Record-Keeping: Detailed records of our stability testing processes create a comprehensive trail that exemplifies our dedication to quality and compliance.

Upholding ICH Guidelines:

  • Stability Testing (Q1A-R2): Our stability testing protocols are not just compliant but aim to set new industry benchmarks, providing comprehensive data for regulatory submissions.
  • Photostability Testing (Q1B): Our photostability testing procedures are integral to stability testing, protecting against potential degradation and ensuring products withstand light exposure.
  • Bracketing and Matrixing (Q1D): We implement efficient bracketing and matrixing in stability testing, maximizing resources while maintaining rigorous standards.
  • Stability Data Evaluation (Q1E): The evaluation of stability data is meticulous, ensuring that shelf life and retest periods are based on solid scientific evidence from stability testing.

Ensuring Compliance at Renejix:

  • Protocol Fidelity: Our scientists’ strict adherence to established protocols reflects our commitment to regulatory compliance in every stability test.
  • Continual Education: We continuously educate our team on the latest regulatory developments and best practices in stability testing.
  • Quality Assurance: Our proactive quality assurance program, crucial for stability testing, is designed to identify and address any deviations before they impact product quality.
  • Technological Advancement: Utilizing advanced analytical technologies ensures our stability testing capabilities meet and exceed regulatory expectations.
  • Documentation Diligence: Our documentation practices for stability testing are rigorous, ensuring accuracy and integrity in every piece of data.
  • Regulatory Dialogue: Maintaining an open dialogue with regulatory bodies ensures our stability testing practices are not just compliant but also contribute to the evolution of industry standards.

Additional Enhancements:

  • Stability Testing Expertise: Our team’s expertise in stability testing is unmatched, ensuring that every product is evaluated with precision and care.
  • Innovative Stability Protocols: We develop innovative stability testing protocols that push the boundaries of traditional methods, offering more efficient and accurate assessments.
  • Client-Centric Stability Solutions: Tailoring our stability testing services to meet the specific needs of our clients, we provide personalized solutions that ensure product stability and compliance.
  • Global Stability Standards: We stay abreast of global stability testing standards, ensuring our services meet the requirements of international markets.
  • Sustainability in Stability Testing: Our commitment to sustainability extends to our stability testing operations, where we strive to minimize environmental impact while maintaining the highest quality standards.

Capacity And Facilities

Expansive Storage Solutions:

  • Versatile Capacity: Our stability testing storage facilities are engineered to handle a diverse range of product volumes, ensuring that from small-scale early development batches to full-scale commercial manufacturing, every product’s stability is precisely monitored.
  • Modular Design: The modular nature of our storage solutions allows for rapid scalability in stability testing, ensuring we can accommodate the growing stability needs of our clients.

Advanced Chamber Specifications:

  • Multiple Chambers: We operate an extensive array of stability chambers, each calibrated to maintain precise environmental conditions, ensuring the accurate replication of real-world storage scenarios for stability testing.
  • Customizable Environmental Settings: Our chambers are equipped with advanced systems that allow for the fine-tuning of temperature and humidity settings, catering to the specific stability requirements of each product.

Innovative Features and Technologies:

  • Advanced Climate Control: Our facilities are equipped with cutting-edge climate control systems for stability testing, ensuring that products are stored under optimal conditions that mimic global distribution environments.
  • Specialized Storage Suites: For products with unique stability testing needs, we offer specialized suites that provide tailored environments, including low-temperature and low-humidity conditions.

Renejix’s Methodological Approach:

  • Regulatory Compliance: Our facilities are designed and operated in strict compliance with cGMP and ICH guidelines for stability testing, ensuring that every product meets the highest standards.
  • Cutting-Edge Equipment: We utilize over 300 pieces of state-of-the-art equipment for stability testing, enabling us to conduct a wide range of tests, from simple assays to complex stress tests.
  • Innovative Testing Techniques: Our scientists employ advanced stability testing techniques, including accelerated stability assessment programs (ASAP) and predictive modeling, to provide rapid and accurate predictions of product shelf life.
  • Dynamic Storage Adaptability: Our stability testing chambers can be dynamically adapted to simulate a variety of storage and transport conditions, reflecting the challenges products may face in the real world.
  • Integrated Systems: We integrate stability testing data collection systems within our storage solutions, ensuring real-time monitoring and rapid response to environmental changes.
  • Security and Access Control: Our stability testing facilities feature advanced security and access control systems, ensuring that only authorized personnel can access the stored products, maintaining the integrity of the stability testing process.
  • Energy-Efficient Operations: We prioritize energy efficiency in our stability testing operations, utilizing green technologies to reduce our carbon footprint while maintaining the highest quality standards.
  • Client Collaboration: We work closely with our clients to understand their stability testing needs, providing customized storage solutions and real-time access to stability data, fostering transparency and trust.

Quality Assurance

Quality And Integrity Assurance In Stability Data:

  • Precision Environmental Control: Our advanced monitoring systems are pivotal in maintaining precise control over environmental conditions, a cornerstone for effective stability testing.
  • Automated Data Logging: We implement automated data logging systems to ensure accurate and continuous recording of environmental parameters, a critical aspect of stability testing.
  • Alert and Response Protocols: Our alert mechanisms are designed for immediate notification and response to any environmental deviations, ensuring the integrity of our stability testing.

QA Processes:

  • Comprehensive SOPs: We adhere to detailed standard operating procedures that govern every aspect of the stability testing process, ensuring consistency and compliance.
  • Regular Equipment Validation: Regular validation of all analytical instruments and equipment is essential for ensuring accuracy and reliability in stability testing.
  • Data Integrity Assurance: We employ stringent data integrity checks, including audit trails and electronic signatures, to maintain the sanctity of stability data.

Scientific Rigor and Methodology:

  • Calibration and Maintenance: Regular calibration and maintenance of our equipment are fundamental to guarantee consistent and reliable performance in stability testing.
  • Methodological Consistency: We maintain methodological consistency across all tests to ensure data comparability and reliability, which is vital for comprehensive stability testing.
  • Advanced Statistical Analysis: Sophisticated statistical tools are applied to analyze stability data, reinforcing the robustness of our findings and the validity of our stability testing.

Quality Assurance Best Practices:

  • Ongoing Staff Training: Continuous training of our staff ensures they stay abreast of the latest industry standards and best practices in stability testing.
  • Documentation and Record-Keeping: We enforce comprehensive documentation and meticulous record-keeping, which are crucial for full traceability and accountability in stability testing.
  • Regulatory Compliance: Our facilities and processes are regularly audited to ensure compliance with all relevant regulatory guidelines, underscoring our commitment to stability testing excellence.


  • Guaranteeing Drug Efficacy: Stability testing is essential to ensure medications deliver consistent therapeutic benefits throughout their lifecycle, far beyond being a mere regulatory checkbox.
  • Industry Standards: Our adherence to international regulatory frameworks is unwavering, ensuring quality and safety in pharmaceuticals through rigorous stability testing.
  • Safeguarding Public Health: Stability testing is our moral obligation, going beyond science to ensure that every dose administered is as safe and effective as the first.

Additional Enhancements:

  • Risk Assessment in Stability Testing: We conduct thorough risk assessments as part of our stability testing to preemptively identify and mitigate potential issues that could affect product stability.
  • Environmental Stress Testing: Our stability testing includes environmental stress testing to evaluate how products withstand adverse conditions, ensuring their robustness and longevity.
  • Shelf Life Studies: We perform comprehensive shelf life studies as part of our stability testing to accurately determine the duration for which products remain safe and effective.
  • Container-Closure System Testing: Stability testing also encompasses the evaluation of container-closure systems to ensure they provide adequate protection throughout the product’s intended shelf life.
  • Stability Testing for Global Markets: We design our stability testing protocols to meet the requirements of global markets, ensuring that products can withstand the varied conditions they will encounter worldwide.

Additional Benefits

Customized Protocol Design:

  • Tailored Stability Protocols: Our expert stability teams craft customized protocols, meticulously tailored to your product development requirements, ensuring that every aspect of stability testing is addressed.
  • Comprehensive Stability Data: We execute stability studies with precision, delivering comprehensive stability data in a format that suits your diverse needs.
  • Critical Quality Considerations: The protocol design for stability testing takes into account the critical quality attributes of the API or drug product, clinical phases, intended markets, and packaging information.

Efficient Stability Evaluation Techniques:

  • Bracketing and Matrixing: When appropriate, we incorporate bracketing or matrixing techniques in our stability testing to efficiently evaluate stability across a range of conditions and formulations.
  • Adaptive Testing Strategies: Our stability testing strategies are adaptive, allowing us to efficiently navigate the complexities of different product formulations and conditions.

Project Milestone Prioritization:

  • Rush Testing for Critical Decisions: We prioritize project milestones during execution, offering rush testing to support critical decisions or regulatory filings in our stability testing processes.
  • Timely Stability Results: Stability results can be provided in various forms, including a certificate of analysis at each time point, ensuring timely insights during stability testing.

Comprehensive Stability Reporting:

  • Accumulated Summary Tables: Our stability testing results are compiled into accumulated summary tables, providing a clear overview of the data.
  • Trending and Expiration Dating: Stability data trending and expiration dating are included as part of the complete stability package, offering valuable predictions about product longevity.

External Sample Testing and Storage:

  • External Facility Testing: We offer testing for stability samples stored at external facilities, extending our stability testing services beyond our own labs.
  • Contingency and Retain Sample Storage: We provide secure storage for contingency and retain samples, ensuring that stability testing samples are preserved for future reference.

Additional Enhancements:

  • Regulatory Alignment: Our stability testing protocols are in strict alignment with regulatory requirements, ensuring global compliance and market readiness.
  • Advanced Analytical Capabilities: We employ advanced analytical capabilities in our stability testing, utilizing high-precision instruments for accurate data collection.
  • Lifecycle Stability Management: We manage the stability testing lifecycle of products, from development through to post-market surveillance, ensuring ongoing compliance and performance.
  • Custom Reporting: Tailored reporting options are available to meet client-specific requirements, providing flexibility in how stability testing data is presented and utilized.
  • Integrated Data Systems: Our stability testing utilizes integrated data systems for seamless data capture and analysis, enhancing the efficiency and reliability of our results.

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Here are some frequently asked questions about stability testing and storage:

What is stability testing?

Stability testing is a critical process in pharmaceutical development where drug products are evaluated under specific conditions over a set period to understand how time and environmental factors (such as temperature, humidity, and light) affect their quality, safety, and efficacy. The results are used to determine shelf life, storage conditions, and packaging requirements. Stability testing follows guidelines provided by regulatory authorities like the FDA and ICH (International Council for Harmonisation).

Why is stability testing important?

Stability testing is essential for ensuring the drug remains effective and safe throughout its intended shelf life. It helps identify the optimal storage conditions and packaging needs to maintain drug quality. Stability testing is also a regulatory requirement for obtaining marketing approval, as it provides evidence that the drug will perform as expected under normal storage conditions and until its expiration date.

What types of stability studies do you offer?

We offer a comprehensive range of stability studies, including:

  • Real-time stability testing: Assessing the product under recommended storage conditions for its anticipated shelf life.
  • Accelerated stability testing: Exposing the product to elevated conditions to speed up the aging process, predicting long-term stability.
  • Stress testing: Subjecting the product to extreme conditions to assess its robustness and identify degradation products.
  • Photostability testing: Evaluating the effect of light exposure on the product.
  • Freeze-thaw cycle testing: Assessing stability through cycles of freezing and thawing, important for products requiring cold chain logistics.
How do you determine the appropriate conditions for stability testing?

The appropriate conditions for stability testing are determined based on regulatory guidelines, the product's intended market, and specific attributes of the drug product. For example, ICH guidelines recommend specific temperature and humidity conditions for real-time and accelerated studies. The product's composition, formulation, and packaging can also influence the selection of testing conditions. Custom studies may be designed for products with unique requirements or for specific global markets with different climatic zones.

What is the significance of ICH guidelines in stability testing?

ICH guidelines provide a harmonized framework for stability testing, ensuring consistent and comprehensive evaluation of pharmaceutical products across different regions. These guidelines define the types of studies required, testing conditions, study durations, and documentation needed for regulatory submissions. Adhering to ICH guidelines helps ensure that a pharmaceutical product is evaluated rigorously and is likely to be accepted by regulatory authorities in ICH member countries, facilitating global market access.

Can you support stability testing for all types of dosage forms?

Yes, we can support stability testing for a wide range of dosage forms, including solid, semi-solid, liquid, and injectable products. Our facilities are equipped with a variety of controlled environment chambers that can simulate a broad spectrum of storage conditions. Our experienced team is adept at developing and executing stability protocols tailored to the unique requirements of each dosage form and its specific formulation characteristics.

What happens if a product fails stability testing?

If a product fails stability testing, we conduct a thorough investigation to identify the root cause of the failure, which could be related to formulation, packaging, or storage conditions. Based on the findings, we may recommend formulation adjustments, alternative packaging solutions, or revised storage conditions. A new stability study is then initiated to confirm that the modifications address the stability issues. Our goal is to ensure that the product meets all quality and regulatory requirements before proceeding to market.

How are stability samples stored and monitored?

Stability samples are stored in controlled environment chambers that accurately maintain specified conditions of temperature and humidity. These chambers are continuously monitored with calibrated equipment to ensure consistent conditions throughout the study duration. Samples are periodically removed at predefined intervals and analyzed for physical, chemical, and microbiological stability indicators. Comprehensive records are maintained for each study to ensure traceability and compliance with regulatory standards.

How long does stability testing take?

The duration of stability testing varies depending on the type of study. Real-time stability studies typically follow the intended shelf life of the product, which could be 12 months, 24 months, or longer. Accelerated stability studies are shorter, often lasting 6 months. The actual timeline can also be influenced by the specific requirements of the regulatory submission and the need for intermediate testing points. Early phase development may utilize abbreviated stability studies to support initial filings, with more comprehensive testing conducted in parallel to support final product registration.

Do you provide stability storage services?

Yes, we provide comprehensive stability storage services, offering a range of controlled temperature and humidity conditions to meet ICH guidelines and custom requirements. Our storage facilities are designed to accommodate large and small-scale studies for a variety of pharmaceutical products. These services are complemented by our analytical testing capabilities, providing a complete solution for stability study execution and data analysis. We ensure that all stored products are managed under strict GMP conditions, with 24/7 monitoring and backup systems to guarantee sample integrity throughout the study duration.