
03/08/2025
"Precision Under Pressure: Validating Methods for Stress Conditions"
________________________________________
When analytical methods are developed to support pharmaceutical products, validating them under stress conditions isn’t just a regulatory requirement — it’s a reliability guarantee.
Here’s what we assess to ensure your method performs, even under chemical or environmental pressure:
🔹 Specificity
Can the method clearly distinguish between the active ingredient and any degradation products or impurities?
🔹 Accuracy
Are the results consistent with the true value — even when the sample is under stress?
🔹 Robustness
Do small, intentional changes in method parameters (like temperature, flow rate, or pH) still yield reliable data?
🔹 Precision
Can we reproduce the results across multiple analysts, instruments, and days — without significant variation?
🔹 Detection Limit (LOD)
What is the lowest amount of substance that can be reliably detected — even in degraded or diluted samples?
🔹 Quantitation Limit (LOQ)
What’s the lowest amount that can be quantified with accuracy and precision?
🔹 Linearity
Does the method produce results directly proportional to concentration across the intended range?
🔹 Range
Over what concentration interval does the method remain accurate, precise, and linear?
🔹 Stability of Solution
Does the analytical solution remain stable throughout the testing period — or does degradation introduce error?
At Cobalt Research, we validate for performance, not just for compliance — ensuring your method holds up under pressure and stands up to regulatory scrutiny.
________________________________________