Good Manufacturing Practice (GMP) stability testing and GMP release testing for large-molecule biopharmaceuticals and proteinaceous In Vitro Diagnostic (IVD) reagents are uniquely challenging.
These products—such as proteins, antibodies, and nucleic acids—are:
- Structurally complex
- Sensitive to environmental conditions
- Difficult to maintain over time and during testing
Because of this complexity, they require sophisticated analytical techniques to ensure molecular integrity and batch-to-batch consistency. Partnering with a bioanalytical CRO that offers state-of-the-art services is essential.
Analytical Demands for Large-Molecule Biopharmaceuticals
Testing typically involves advanced methods that must be:
- Meticulously developed, validated, and standardized
- Sensitive enough to detect impurities and degradation products
- Able to confirm molecular integrity
Determining biological activity is also more complex than measuring concentration in small-molecule drugs. Bioassays, often requiring live cells or other biological systems, can be inherently variable—making reproducibility and accuracy major challenges.
Working with a bioanalytical CRO with proven GMP-compliant laboratory services ensures these demands are met.
GMP Stability Testing Challenges for Large-Molecule Drugs
Purpose: GMP stability testing determines how an API’s quality changes under environmental stressors like temperature, humidity, and light. It also examines:
- API interactions with excipients
- Container closure systems
- Packaging materials
This testing informs:
- Shelf life
- Storage conditions (before and after opening)
- Potential degradation risks
Degradation pathways of biopharmaceuticals are much more unpredictable than for small-molecule drugs, and they vary for different proteins. For example, some parenteral biologics administered to patients are highly concentrated and may precipitate during the stability studies.
Biopharmaceuticals are often only stable over a very limited temperature range, meaning that temperature deviations outside the optimum storage conditions can significantly impact stability. This means they must be stored within an extremely narrow temperature range to avoid an impact on biological activity. GMP stability testing of such sensitive products in a range of temperatures must be carefully planned to consider actual storage conditions. The stability of proteins often also calls for analytical methods other than liquid chromatography, which is frequently used for small organic molecules.
GMP Release Testing Challenges
GMP release testing is a critical quality control process involving physical, chemical, and microbiological tests. These tests ensure that manufactured therapeutics meet predetermined specifications before being released to the market. GMP lot release testing must demonstrate that products released to the market are consistent with those assessed during the regulatory process.
The importance of GMP lot release testing lies in its ability to verify that manufacturing processes are operating correctly and consistently, ensuring the quality and safety of the products.
The amount of testing required for each batch depends on various factors, such as identified risks, variability in the manufacturing process, and the testing methods applied. A sampling procedure should be established to ensure that samples taken for analysis are representative of the manufactured batch.
Appropriate control measures should be built into the manufacturing processes in the early phases of product and process development to minimize the need for extensive GMP lot release testing. Regulators typically require companies to provide suitable batch records, including evidence of the batch testing that has been performed. These records should follow the ALCOA standard (Attributable, Legible, Contemporaneous, Original, and Accurate) and provide full traceability of the manufacturing process. A reputable bioanalytical CRO will take the appropriate measures to ensure regulatory compliance.
Prolytix GMP Stability Testing and Storage Services
Prolytix leverages 35+ years of protein chemistry experience to support the large-molecule drug product lifecycle from discovery through release, including implementing and performing drug stability testing procedures for large-molecule biopharmaceuticals and proteinaceous IVD reagents. The bioanalytical CRO offers real-time and accelerated stability programs and shelf-life determination. Prolytix performs all drug stability testing under strict GMP compliance in its full-service, FDA-inspected GMP facility. Therapeutic developers know exactly how their product performs under a wide range of conditions—all of which meet ICH guidelines and the compliance requirements of leading global regulators. Prolytix provides testing services for clinical trial materials and products to prepare for commercial release.
Prolytix uses client-defined, compendial, or in-house developed and validated methods to provide compliant stability testing data. Prolytix also offers ICH-compliant stability storage on-site.
Prolytix GMP Storage Services
Control overhead costs and maintain product integrity with reliable stability storage services for clinical and commercial materials.
Our GMP storage facility provides:
- ICH-compliant storage across a wide range of temperature and humidity conditions
- Backup storage and on-site generators to protect materials in case of equipment or power failure
Prolytix GMP Release Testing Services
Prolytix provides GMP release testing for commercial and clinical trial drug substances and products.
In our FDA-inspected, fully compliant facility, we test:
- Bulk materials
- Final products
- Final products
- In-process materials
Combined with our other Chemistry, Manufacturing, and Control (CMC) and drug development services, biotherapeutic developers receive the highest quality from early-phase clinical development through commercial release.
We perform:
- Validation studies on all tests and processes to demonstrate product compliance
- Strict sample reconciliation against provided documentation
- Continuous environmental monitoring for all storage chambers, with backup storage and power systems in place
GMP Release Testing Analytical Methods
Prolytix helps develop analytical methodology and acceptance criteria, as well as execute predefined GMP release testing. Prolytix emphasizes customer success and provides fast, reliable turnaround and efficient sample management.
- Compendial Methods
- Osmolality Measurement
- Residual Moisture Determination
- Excipients including pH Modifiers, Tonicity, Amino Acids, Preservatives, Chelators, Surfactants, Inhibitors
- HIAC Liquid Particle Analysis
- Thrombin Generating Assays
- HPLC/UPLC Methods (Reverse Phase, Size Exclusion, Ion Exchange)
- SDS-PAGE
- Clotting Assays (Factor Assays, PT, aPTT, NAPTT)
- Anti-Drug Antibody Assays
- Relative Potency
- Protein Concentration