StabilityConditionMonitoringQualityChecker

Stability Condition Monitoring Quality Checker — Stability Storage Condition Monitoring

ℹ️ Utility checks compliance of climate chamber parameters with ICH Q1A(R2) requirements for stability studies:
• Long Term: 25°C ± 2°C / 60% RH ± 5% RH
• Accelerated: 40°C ± 2°C / 75% RH ± 5% RH
• Refrigerated: 5°C ± 3°C
• Freezer: -20°C ± 5°C
• Control of average, minimum, and maximum values
• Counting the number of excursions (out-of-limit events)

⚠️ CRITICAL: Any excursion (out-of-limit event) must be documented and investigated!
Exceedance of temperature or humidity can irreversibly accelerate drug degradation (hydrolysis, oxidation).

Usage:
StabilityConditionMonitoringQualityChecker.exe → demo mode (console output)
StabilityConditionMonitoringQualityChecker.exe input.csv output.json → evaluate your data

Input format:
BatchNumber,ProductName,StudyCondition,AvgTemperatureC,MinTemperatureC,MaxTemperatureC,AvgRelativeHumidity,MinRelativeHumidity,MaxRelativeHumidity,ExcursionCount

Example:
STAB-2026-LT-001,Paracetamol Tabs,LongTerm,25.2,24.5,25.8,60.1,58.0,62.5,0

— WHY IS THIS NEEDED?
Stability studies are the basis for determining the shelf life of a drug product.
Data on temperature and humidity in chambers must be reliable and compliant with regulations.
Deviations in conditions cast doubt on all analytical control results of samples stored in that chamber.

⚠️ CRITICAL:
• Average temperature should be in the center of the range (e.g., 25°C for Long Term).
• Minimum and maximum values must not exceed established limits (±2°C or ±3°C).
• Excursions are any moments when the sensor recorded a value outside specification.
• For refrigerators, humidity is often not strictly controlled, but temperature is critical for protein products.

Key features:
• Automatic selection of limits depending on study type (LongTerm, Accelerated, etc.)
• Check of both average values and peak loads (Min/Max)
• Accounting for the number of excursions as a critical data quality parameter
• Generation of reports for Quality Assurance (QA) departments and LIMS LabWare
• Compliance with ICH Q1A(R2) and GMP guidelines

Critical parameters:
• Temperature (Avg): within target ± tolerance
• Temperature (Min/Max): within tolerance
• Humidity (Avg): within target ± tolerance (if applicable)
• Number of Excursions: 0

💡 Usage tips:
1. Calibration: Chamber sensors must be annually calibrated with traceability to national standards.
2. Mapping: Before commissioning, the chamber must undergo temperature/humidity mapping.
3. Backup: Data must be saved in a secure system with audit trail (21 CFR Part 11).
4. Investigation: If excursions (>0) occur, a risk assessment for the samples must be conducted.
5. Placement: Samples should be placed in an area where conditions are guaranteed stable (not near doors or fans).

⚠️ Note: This utility does not assess the quality of the drug itself, but the quality of the conditions in which it was stored. If conditions are violated, the stability data of the drug is considered invalid.